Belonio General Knowledge Area 1 Flashcards
1
Q
A hand operated tractor which is suitable for both primary and
secondary tillage used when field has been soaked for at least half
a day to soften the soil.
a. power tiller
b. puddling-type floating tiller
c. reaper
d. none of the above
A
puddling-type floating tiller
2
Q
Optimum axle speed for puddling-type floating tiller.
a. 100 rpm
b. 250 rpm
c. 340 rpm
d. none of the above
A
250 rpm
3
Q
It is the ratio of the drawbar power and the wheel axle power.
a. lugging efficiency
b. traction efficiency
c. mechanical efficiency
d. none of the above
A
traction efficiency
4
Q
The sum of all resistance acting on the tractor
a. coefficient of traction
b. running resistance
c. rolling resistance
d. none of the above
A
running resistance
5
Q
Running resistance of a tractor includes
a. rolling resistance
b. air and acceleration resistance
c. slope resistance
d. all of the above
A
rolling resistance
air and acceleration resistance
slope resistance
6
Q
Weight transfer means
a. to move paddy from the field to the granary
b. to transfer torrens title from the landlord to the tenant
c. to shift implement’s weight to the tractor’s drive wheel in
order to improve traction
d. none of the above
A
to shift implement’s weight to the tractor’s drive wheel in
order to improve traction
7
Q
A tractor pulls a 1.0 meter wide heavy duty offset disk harrow at
an operating speed of 6 kph. What is the theoretical field capacity
of the machine?
a. 0.6 ha/hr
b. 0.06 ha/hr
c. 6 ha/hr
d. none of the above
A
0.6 ha/hr
8
Q
Automatic Draft Control in a modern farm tractor:
a. automatically controls the amount of air passing through the
radiator to regulate the operating temperature of the engine
b. positions the implement at a constant height or depth relative to
the tractor
c. is the hydraulic implement hitch system which automatically
raises or lowers a soil engaging implement to maintain its draft
at a pre-selected value
d. none of the above
A
is the hydraulic implement hitch system which automatically
raises or lowers a soil engaging implement to maintain its draft
at a pre-selected value
9
Q
An international testing center for tractor.
a. International Rice Research Institute
b. NEBRASKA
c. International Farm Machinery Institute
d. none of the above
A
NEBRASKA
10
Q
When a machine is driven directly from the shaft of a power
source, the power is transmitted using:
a. gear drive
b. sprocket and chain drive
c. direct drive
d. none of the above
A
direct drive
11
Q
Belt size designation for agricultural V-belt is:
a. A, B, C, D, E
b. HA, HB, HC, HD, HE
c. AA-BB-CC-DD-EE
d. none of the above
A
HA, HB, HC, HD, HE
12
Q
It is a gripping device between power source.
a. clutch
b. chain
c. springs
d. none of the above
A
clutch
13
Q
Machine element that transmit torque and power.
a. pulley
b. bearing
c. shaft
d. none of the above
A
shaft
14
Q
It is used to fasten shaft pulleys and hubs of gears together.
a. bolt
b. springs
c. keys
d. none of the above
A
keys
15
Q
A universal joint is:
a. a connector which can be used on all brands of tractor
b. used to transmit power between two intersecting shafts usually
when the angle between them is variable
c. a prohibited drug used universally
d. none of the above
A
used to transmit power between two intersecting shafts usually
when the angle between them is variable
16
Q
A diesel engine that operates at 2500 rpm will be used to drive an
irrigation pump which should turn at 1000 rpm. The pulley
diameter for the pump is 4 inches. What is the recommended
pulley for the engine?
a. 2 in.
b. 4 in.
c. 10 in.
d. none of the above
A
2 in.
17
Q
An irrigation pump shall be driven by a single cylinder engine.
The set-up has the following data: Engine rpm=2200, Pump
rpm=1800, Diameter of Engine Pulley=25 cm, what should the
diameter of the second pulley be?
a. 35.05 cm.
b. 30.55 cm
c. 53.05 cm
d. none of the above
A
30.55 cm
18
Q
The length of a flat-belt pulley drive with the following data is:
Diameter of first pulley=300 mm, diameter of second pulley=400
mm, center distance of the pulley shaft=10 meters.
a. 20.15 m
b. 21.05 m
c. 25.01 m
d. none of the above
A
21.05 m
19
Q
A corn sheller cylinder will be driven by 10 hp diesel engine thru
a V-belt drive. The engine has a speed of 1800 rpm while the
required speed of the corn sheller is 650 rpm. The effective
diameter of the driver pulley is 12 inches. What should be the
diameter of the driven pulley?
a. 25 in.
b. 33 in.
c. 42 in.
d. none of the above
A
33 in.
20
Q
In the given problem in item above, what is the required length of
V-belt if the center distance between pulleys is 60 in.
a. 169 in.
b. 192.5 in.
c. 210 in.
d. none of the above
A
192.5 in.
21
Q
If the belt has a capacity rating of 4.5 hp per belt, how many belts
are recommended for the drive?
a. 1 belt
b. 2 belts
c. 4 belts
d. none of the above
A
2 belts
22
Q
What is the recommended shaft diameter for the drive in item
a. 1⁄2 in.
b. 3⁄4 in.
c. 1 in.
d. none of the above
A
3⁄4 in.
23
Q
A type of plow that is widely adapted in breaking different types
of soil for turning and covering crop residues.
a. rotary plow
b. moldboard plow
c. disk plow
d. all of the above
A
moldboard plow
24
Q
The power required in pulling an implement.
a. wheel power
b. brake power
c. drawbar power
d. none of the above
A
drawbar power
25
A tillage equipment which displaces and shatters soil, used to
reduce soil strength and to bury or mix plant materials and
fertilizers in the tilled layer.
a. primary tillage equipment
b. secondary tillage equipment
c. seeding and planting equipment
d. none of the above
primary tillage equipment
26
A tillage implement consisting of two or four gangs of concave
disks.
a. disk plow
b. disk harrow
c. cultivator
d. none of the above
disk harrow
27
A tillage implement which shatters the soil without complete
burial or mixing of surface materials.
a. chisel plow
b. lister plow
c. disk plow
d. none of the above
chisel plow
28
Mechanical manipulation of soil for any purpose.
a. land grading
b. tillage
c. earth moving
d. none of the above
tillage
29
A procedure in which planting is made directly into an essentially
unprepared seedbed.
a. zero tillage
b. no-tillage planting
c. reduced tillage
d. none of the above
zero tillage
30
The pushing or rolling of soil by a steeply inclined blade.
a. bulldozing
b. chiselling
c. subsoiling
d. none of the above
bulldozing
31
A secondary tillage operation which pulverizes, smoothens, and
packs the soil during seedbed preparation and also controls weeds.
a. harrowing
b. listing
c. chiselling
d. none of the above
harrowing
32
A tillage and land forming operation using a tool which splits the
soil and turns two furrows laterally in opposite directions, thereby
providing a ridge-and-furrow soil configuration.
a. listing
b. harrowing
c. chiselling
d. none of the above
listing
33
Minimum soil manipulation necessary for crop production or for
meeting tillage requirements under existing soil condition.
a. no-tillage planting
b. much tillage
c. minimum tillage
d. none of the above
minimum tillage
34
A tool which cuts plants materials and soil ahead of another tool.
a. coulter
b. jointer
c. injector
d. two of the above
d. two of the above
35
The force to propel an implement in the direction of travel.
a. draft
b. drawbar horsepower
c. side draft
d. none of the above
draft
36
The angle, in a vertical plane perpendicular to the direction of
travel, between a centralized tool or reference axis and the soil
surface.
a. tilt angle
b. lift angle
c. side angle
d. none of the above
tilt angle
37
It is deep chiselling below 16 in. for the purpose of loosening soil
for root growth and/or water movement.
a. ridging
b. chiselling
c. subsoiling
d. none of the above
subsoiling
38
It is the part of the moldboard plow that receives the furrow slice
from the share and turns to break, crush, and pulverize the soil.
a. share
b. shin
c. moldboard
d. all of the above
moldboard
39
The part of the moldboard plow which is used to cut the soil.
a. share
b. shin
c. moldboard
d. all of the above
share
40
It is a part of the plow bottom which helps to counteract the side
pressure exerted by the furrow slice.
a. shin
b. landside
c. share
d. none of the above
landside
41
A type of implement which is directly attached to the tractor and
its power lift is dependent upon the tractor engine for its general
operation.
a. semi-integral
b. integral-mounted
c. training or pull
d. none of the above
integral-mounted
42
A type of implement type which is supported by two or three
wheels and is hitched to the drawbar of the tractor where it is
being pulled.
a. integral-mounted
b. trailing
c. semi-integral
d. none of the above
trailing
43
A type of plow which is equipped with plow bodies which turns
the furrow slice to one side only.
a. one-way plow
b. two-way plow
c. two of the above
d. none of the above
one-way plow
44
A type of plow which has two sets of bodies mounted
symmetrically on a share frame which can be rotated over 180
degrees along the longitudinal axis.
a. reversible plow
b. one-way plow
c. lister plow
d. none of the above
reversible plow
45
The draft of a plow is dependent on the:
a. size of the plow
b. plowing depth
c. type of soil
d. all of the above
size of the plow
plowing depth
type of soil
46
The factors that affect the draft of the plow:
a. soil condition
b. hitch to the tractor
c. topography
d. all of the above
soil condition
hitch to the tractor
topography
47
Percentage of work done in pulling an average plow.
a. 50 %
b. 18 %
c. 30%
d. none of the above
18 %
48
Percentage of work of plow used in cutting furrow slice.
a. 43%
b. 58%
c. 24%
d. none of the above
43%
49
Percentage of work of plow used in turning slice of soil.
a. 34%
b. 25%
c. 60%
d. none of the above
34%
50
A point in which all the horizontal and vertical forces in the plow
meets.
a. side draft
b. center of resistance
c. center of gravity
d. none of the above
center of resistance
51
Drawbar horsepower is a factor of:
a. force exerted by plow
b. speed of plow
c. all of the above
d. none of the above
force exerted by plow
speed of plow
52
What is the force required to pull a single moldboard plow on a
clay loam soil having a width and depth of cut of 30 cm and 15
cm, respectively. Soil draft is 8 psi.
a. 314 kg
b. 253 kg
c. 157 kg
d. none of the above
253 kg
53
If the plow above has an average speed of 5 km/hr, what is the
drawbar horsepower of the plow.
a. 4.6 hp
b. 3.4 hp
c. 5.1 hp
d. none of the above
4.6 hp
54
A type of plow designed to reduce friction by making a rolling
bottom instead of slides along the furrow.
a. moldboard
b. rotary plow
c. disk plow
d. none of the above
disk plow
55
A primary-tillage plow used for small rice farm.
a. moldboard
b. rotary
c. spiral
d. all of the above
moldboard
rotary
spiral
56
A primary- tillage plow for rice farming that is attached in
replacement to the cage wheel of a power tiller.
a. rotary
b. spiral
c. disk
d. all of the above
spiral
57
An angle of the disk plow in reference to the vertical plane.
a. tilt angle
b. disk angle
c. all of the above
d. none of the above
tilt angle
58
An angle of the disk plow in reference to the direction of travel of
the plow.
a. tilt angle
b. disk angle
c. all of the above
d. none of the above
disk angle
59
A plow that combines the primary and secondary tillage at the
same time. It is used to cut and to pulverize the soil.
a. disk plow
b. rotary plow
c. chisel plow
e. all of the above
rotary plow
60
The power requirement of a rotary tiller for primary tillage.
a. 50 kW/m
b. 30 kW/m
c. 70 kW/m
d. all of the above
30 kW/m
61
A plow primarily for loosening the soil.
a. lister plow
b. disk plow
c. chisel plow
d. all of the above
chisel plow
62
A plow that is used to break up plow sole.
a. chisel plow
b. lister plow
c. subsoiler
d. none of the above
subsoiler
63
A secondary-tillage implement which stirs the soil using multiple
number of disk blade arranged on a gang.
a. spike tooth harrow
b. disk harrow
c. two of the above
d. none of the above
disk harrow
64
A gang arrangement on a disk harrow consisting of two gangs of
disk placed end to end which throws the soil in opposite direction.
a. double-action
b. single-action
c. offset
d. none of the above
single-action
65
A gang arrangement often called as “tandem harrow”.
a. double-action
b. single-action
c. offset
d. none of the above
double-action
66
A gang arrangement in which the harrow is not centrally located
with respect to the tractor position.
a. double-action
b. single-action
c. offset
d. none of the above
offset
67
Factors that influence the depth of penetration of disk harrow.
a. angle of disk
b. angle of hitch
c. size of disk
d. all of the above
d. all of the above
68
A trailing harrow that is hitched too high to the drawbar of the
tractor will...
a. have too deep penetration
b. have too shallow penetration
c. have right penetration
d. none of the above
have too shallow penetration
69
The actual coverage rate by an implement based on the total field
time.
a. field efficiency
b. effective field capacity
c. theoretical field capacity
d. none of the above
effective field capacity
70
A moldboard plow has:
a. lower draft than disk plow
b. higher draft than disk plow
c. equal draft than disk plow
d. all of the above
higher draft than disk plow
71
By increasing the disk angle, the penetration of a disk plow,
a. will be improved
b. will be the same
c. will become poor
d. none of the above
will be improved
72
The disk angle that will give the minimum draft for a disk plow
for a given width of cut is:
a. 30-35 deg.
b. 40-45 deg.
c. 45-50 deg.
d. none of the above
40-45 deg
73
Seeding directly into previously undisturbed soil.
a. much tillage
b. no-till
c. minimum tillage
d. none of the above
no-till
74
A tillage operation traditionally performed in preparing a seedbed
for a given crop grown in a given geographical area.
a. conventional tillage
b. conservation tillage
c. strip tillage
d. none of the above
conventional tillage
75
A primary tillage operation which manipulates the soil to a greater
depth than 300 mm.
a. reservoir tillage
b. deep tillage
c. ridge tillage
d. none of the above
deep tillage
76
An implement with integral power unit designed to provide both
mobility and power for performing agricultural operation.
a. mounted implement
b. self-propelled machine
c. trailed-mounted implement
d. none of the above
self-propelled machine
77
A rotary tiller has 2 m operating width. If the tractor runs at a
speed of 2 km/hr, the theoretical field capacity of the machine is:
a. 4.0 ha/hr
b. 0.4 ha/hr
c. 0.04 ha/hr
d. none of the above
0.4 ha/hr
78
The field capacity of the rotary tiller was measured at 0.23 ha/hr.
If the operating width and speed of the machines are 1.5 m. and 2
kph, respectively, the field efficiency of the tiller is:
a. 64%
b. 77%
c. 85%
d. none of the above
77%
79
The effective field capacity of the rotary tiller tilling theoretically
at 0.4 ha/hr for an efficiency of 85% is:
a. 0.34 ha/hr
b. 0.24 ha/hr
c. 0.43 ha/hr
d. none of the above
0.34 ha/hr
80
The effective field capacity of 2 moldboard plows having 25 cm
width each plowing at a speed of 7 km/hr for a field efficiency of
80% is:
a. 0.20 ha/hr
b. 0.28 ha/hr
c. 0.32 ha/hr
d. none of the above
0.28 ha/hr
81
A single-bottom moldboard plows on a clay loam soil (8 psi draft)
having an effective width of cut of 0.3 m. and a depth of cut of 15
cm. What is the force exerted by a plow?
a. 230 kg
b. 253 kg
c. 310 kg
d. none of the above
253 kg
82
What is the drawbar horsepower of the plow in item above if the
plowing speed is 5 kph?
a. 4.6 hp
b. 3.4 hp
c. 7.4 hp
d. none of the above
4.6 hp
83
A 3-bottom plow is plowing at a speed of 8 kph. The effective
width per plow bottom is 25 cm. If the plowing efficiency is
80%, what is the theoretical field efficiency?
a. 0.4 ha/hr
b. 0.6 ha/hr
c. 0.7 ha/hr
d. none of the above
0.6 ha/hr
84
The effective field capacity of the plow in item above is:
a. 0.48 ha/hr
b. 0.53 ha/hr
c. 0.72 ha/hr
d. none of the above
0.48 ha/hr
85
What is the required drawbar pull for a 5-meter tractor drawn
spike tooth harrow with a specific draft of 89 kg/m?
a. 345 kg
b. 445 kg
c. 500 kg
d. none of the above
445 kg
86
What is the drawbar-horsepower of the implement in item above
if it is running at a speed of 6 kph.
a. 8 hp
b. 10 hp
c. 23 hp
d. none of the above
10 hp
87
Headland is:
a. the strip of the land at the ends of the field used for turning by
field machinery
b. a piece of land owned and tilled by the head of family
c. land at the top of the hill
d. none of the above
the strip of the land at the ends of the field used for turning by
field machinery
88
In a 200-hectare corn project, the field has to be tilled in 30 days.
What size of heavy-duty offset-disk harrow should be selected if
the tractor to be used operates at 5 kph. Assume a 75% field
efficiency and an 8-hour working day.
a. 1.5 m
b. 2.2 m
c. 2.0 m
d. none of the above
2.2 m
89
An equipment used to place seed in a furrow.
a. planter
b. seeder
c. broadcaster
d. all of the above
seeder
90
An equipment used to place plant parts to a prepared furrow.
a. planter
b. seeder
c. broadcaster
d. all of the above
planter
91
A machine that prepares the soil, meters the seed, and positions
the seed in one operation.
a. broadcaster
b. drill
c. field distributor
d. none of the above
drill
92
A machine, which is cylindrical in shape, designed for planting
pre-germinated rice seed in rows.
a. broadcaster
b. drum seeder
c. jab planter
d. none of the above
drum seeder
93
Determine the number of plants for a 2-hectare farm planted with
corn with a spacing of 25 cm x 45 cm.
a. 150,000 plants
b. 177,777 plants
c. 185, 877 plants
d. none of the above
177,777 plants
94
A scattering of seeds on the surface of prepared soil.
a. drill seeding
b. hill dropping
c. broadcasting
d. none of the above
broadcasting
95
It is a planting method wherein seeds are deposited, either singly
or in group, in a water soluble tape under controlled condition.
a. precision planting
b. seed-tape planting
c. hill dropping
d. none of the above
seed-tape planting
96
It is a machine that places rice seedlings at a proper spacing on a
well-prepared paddy soil.
a. rice seeder
b. rice transplanter
c. all of the above
d. none of the above
rice transplanter
97
When Agricultural Engineer calibrates a sprayer, he:
a. measures the diameter of a sprayer tank
b. cleans the nozzles.
c. measures and adjust its application rate
d. none of the above
measures and adjust its application rate
98
In the Philippines, rice is usually transplanted
a. for weed control reasons as the seedlings have a head start
over the weeds
b. to give employment to landless farm workers
c. to prevent rats and birds from eating the seeds.
d. none of the above
for weed control reasons as the seedlings have a head start
over the weeds
99
A mechanically-operated machine that removes weeds or grasses
from the crops.
a. seeder
b. weeder
c. cultivator
d. none of the above
weeder
100
It is the ratio between the number of weeds removed by the
weeder to the number of weeds present per unit area.
a. weeding index
b. weeding rate
c. weeding capacity
d. none of the above
weeding index
101
A machine that breaks the liquid droplets of effective size and
distributes them uniformly over the surface or space to be
protected, and regulates the amount of chemical solution to avoid
excessive application that might prove harmful or wasteful.
a. duster
b. sprayer
c. all of the above
d. none of the above
sprayer
102
Primary factor that affects the performance of the sprayer.
a. spray-particle size
b. spraying time
c. spray materials
d. none of the above
spray-particle size
103
It is a sprayer apparatus consisting of pressure source and controls
and specifically employing an over-the-crop boom with automizer
arranged to provide uniform coverage of the treated surfaces.
a. boom sprayer
b. knapsack sprayer
c. compressed-air sprayer
d. none of the above
boom sprayer
104
A field sprayer that is being carried at the back by means of a
shoulder straps.
a. compressed-air sprayer
b. knapsack sprayer
c. power sprayer
d. none of the above
knapsack sprayer
105
A mechanical or thermal device that produces a liquid dispersion
having a volume median diameter of less than 50 um.
a. knapsack sprayer
b. aerosol generator
c. compressed-air sprayer
e. none of the above
aerosol generator
106
An apparatus, which consists of a hopper, a metering unit, and a
distribution device, that uses either gravity, centrifugal force, or
pendulum action to spread granules to the surface of the entire
area to be treated.
a. broadcast spreader
b. granular applicator
c. power sprayer
d. none of the above
broadcast spreader
107
A machine that cuts rice stalks and places them on a windrow
where they are gathered and bound into sheaves and carried to a
thresher.
a. scythe
b. stripper harvester
c. reaper
d. combines
reaper
108
A machine that involves the combing the grain from the plant
while the plant remain anchored.
a. reaper
b. stripper harvester
c. combine harvester
d. all of the above
stripper harvester
109
A machine that detaches the grain from a panicle.
a. reaper
b. thresher
c. sheller
d. all of the above
thresher
110
A machine used in separating the kernels from the cob.
a. grader
b. sheller
c. thresher
d. none of the above
sheller
111
The part of a rice thresher which encloses the threshing cylinder
and allows the separation of the grains from the panicle.
a. threshing cylinder
b. oscillating screens
c. concave
d. none of the above
concave
112
A type of a mechanical thresher in which rice stalks are fed into
the threshing chamber while the stalks are either mechanically- or
manually-held during threshing operation.
a. hold-on thresher
b. throw-in thresher
c. axial-flow thresher
d. none of the above
hold-on thresher
113
A type of mechanical rice thresher which detaches and separates
the grains from the panicles by feeding the rice-in-stalks into the
machine.
a. axial-flow thresher
b. throw in thresher
c. hold-on thresher
d. none of the above
throw in thresher
114
A type of throw-in thresher wherein rice-in-stalks are fed in
between the cylinder and the concave and go directly out of the
threshing chamber.
a. axial-flow thresher
b. through-flow thresher
c. hold-on thresher
d. all of the above
through-flow thresher
115
A type of throw-in thresher which moves the materials being
threshed in a helical manner around the threshing cylinder.
a. axial-flow-thresher
b. through-flow thresher
c. hold-on thresher
d. all of the above
axial-flow-thresher
116
Factors affecting the power requirement of a rice thresher.
a. feeding rate
b. moisture content
c. length of straw
d. all of the above
all of the above
117
It is the ratio of the weight of clean threshed grain to the grain
input.
a. threshing efficiency
b. threshing recovery
c. threshing output
d. all of the above
threshing recovery
118
The ratio of knife velocity to forward velocity of rice reaper.
a. 1.35
b. 2.55
c. 0.55
d. none of the above
1.35
119
In a field demonstration of a rice reaper with 1.2-m cutter bar
performance showed that the average travel speed of the machine
is 3 kph. The average width of cutter bar actually utilized is 1.0 m.
Time lost in crossing the dike is 5 min/ha and 10 min/ha for
repair. Turning and other idle time is 10 % of the effective
operating time while removing field obstruction and clogging is
15 min/ha. What is the field capacity of the machine?
a. 0.36 ha/hr
b. 0.25 ha/hr
c. 0.18 ha/hr
d. none of the above
0.36 ha/hr
120
What is the effective field capacity of the machine in item above?
a. 0.25 ha/hr
b. 0.30 ha/hr
c. 0.35 ha/hr
d. none of the above
0.30 ha/hr
121
What is the time lost in turning and other idle time per hectare of
the reaper in item above?
a. 10 min
b. 17 min
c. 20 min
d. none of the above
20 min
122
It is the ratio between the mass of fuel consumed per unit of time
and the corresponding measured power.
a. specific fuel consumption
b. fuel to mass ratio
c. fuel consumption rate
d. none of the above
specific fuel consumption
123
A tillage or soil preparation in which plant residues are
specifically left on or near the surface.
a. strip tillage
b. mulch tillage
c. optimum tillage
d. none of the above
mulch tillage
124
A steel containing 0.035-0.4 % carbon and is widely used for
production of steel plate, structural steel, bars, etc.
a. mild steel
b. hard steel
c. soft-centered steel
d. all of the above
mild steel
125
The center to center distance between overlapping broadcast
applications.
a. effective width
b. swath
c. broadcasting width
d. all of the above
swath
126
The portion of a combine comprising the mechanism for gathering
crops.
a. crop gatherer
b. star wheel
c. header
d. all of the above
star wheel
127
The horizontal distance, perpendicular to the direction of travel,
an implement performs its intended function in one pass.
a. implement width
b. operating width
c. side draft
d. none of the above
implement width
128
A gas, a liquid, or a solid used to propel or transport chemical.
a. spray material
b. spray nozzle
c. carrier
d. all of the above
carrier
129
The portion of an implement designed to connect the implement
to the power source.
a. connector
b. clutch
c. hitch
d. all of the above
hitch
130
The draft of implement in terms of force per unit area of tilled
cross-section.
a. implement draft
b. specific draft
c. line draft
d. all of the above
specific draft
131
Factor of Safety engineering science refers to:
a. the excess amount of materials designed into a machine to
ensure that it does not break down
b. the ratio of the ultimate strength of a material or component to
the working stress it is expected to be subjected to
c. the safety of workers in the factory
d. none of the above
the ratio of the ultimate strength of a material or component to
the working stress it is expected to be subjected to
132
A name given by a manufacturer to its product to distinguish them
from the ones produced by other manufacturers.
a. trade mark
b. manufacturer’s name
c. brand name
d. none of the above
brand name
133
Raise ridge formed when plowing starts in the middle of strip.
a. back furrow
b. dead furrow
c. furrow wall
d. none of the above
back furrow
134
Open trench left during plowing when the strips are finished.
a. dead furrow
b. back furrow
c. furrow wall
d. none of the above
dead furrow
135
One-thousand gallons per minute (1000 gpm) of water is to be
pumped from a river to a farm 150-ft above the river. What is the
required horsepower to drive the pump considering a pumps
efficiency of 70 % and the friction and other losses of 20 % of the
static head.
a. 64.8 hp
b. 68.4 hp
c. 48.6 hp
d. none of the above
64.8 hp
136
What is the total head loss in meters of the pump system in item
above.
a. 54.8 m
b. 48.5 m
c. 84.5 m
d. none of the above
54.8 m
137
If a diesel engine will be used to drive the pump in item above,
what is the recommended horsepower for the engine? (80%
engine efficiency)
a. 80.9 hp
b. 85.5 hp
c. 60.8 hp
d. none of the above
80.9 hp
138
If a gasoline engine will be used to drive the pump in item above,
what is the power requirement? (70% engione efficiency)
a. 97.2 hp
b. 102.6 hp
c. 125.7 hp
d. none of the above
97.2 hp
139
A farmer wishes to spray his cotton plantation at a rate of 300
gallons per hectare. Sixteen nozzles, 18 inches apart will be used.
The froward speed of the tractor will be 5 kph. Compute the field
capacity of the sprayer in hectare per hour.
a. 5.6 ha/hr
b. 3.6 ha/hr
c. 4.7 ha/hr
d. none of the above
3.6 ha/hr
140
What is the required pump capacity for the sprayer above?
a. 23.5 gpm
b. 18.3 gpm
c. 20.6 gpm
d. none of the above
18.3 gpm
141
In trade circles, CIF stands for
a. Cash-In-Fist
b. Cost, Insurance, and Freight
c. Cost-In Freight
d. None of the above
Cost, Insurance, and Freight
142
A clutch that is used to drive a machine element in only one
direction is
a. slip clutch
b. overrunning clutch
c. friction clutch
d. none of the above
overrunning clutch
143
A clutch that limits the amount of torque or power that is
transmitted through the shaft to the driven member.
a. slip clutch
b. overrunning clutch
c. friction clutch
d. none of the above
slip clutch
144
The unbroken side of furrow is called
a. dead furrow
b. furrow wall
c. back furrow
d. none of the above
furrow wall
145
It is a distinguishing symbol affixed to products by a manufacturer
in order to identify them as his goods.
a. trade name
b. trade mark
c. brand name
d. all of the above
trade mark
146
A tractor operating at 3.5 mph develops a drawbar pull of 3000
pounds. Estimate the required drawbar horsepower for the tractor.
a. 28.0 hp
b. 20.9 hp
c. 19.8 hp
d. none of the above
28.0 hp
147
The specific fuel consumption of a tractor is 0.3 lbs per BHP-
hour. If the heating value of the fuel is 19500 BTU/lb, what is the
brake thermal efficiency?
a. 35.4 %
b. 54.3 %
c. 43.5 %
43.5 %
148
A corn plantation requires a population of 37,000 plants per
hectare. The average emergence is 90 % and the row spacing is to
be 1.2 meters. If the seed are to be drilled, what should be the seed
spacing?
a. 0.4 m
b. 0.3 m
c. 0.2 m
d. none of the above
0.2 m
149
What is the theoretical field capacity of a tandem disk harrow
pulled by 1.5 m wide tractor running at a speed of 10 kph?
a. 1.5 ha/hr
b. 2.5 ha /hr
c. 5.1 ha/hr
d. none of the above
d. none of the above
150
Operating width of the implement minus the overlap is
a. implement width
b. effective width
c. operating width
d. all of the above
effective width
151
A soil-handling implement which turn uniform ridges of soil to
predetermined shape.
a. furrower
b. bed shaper
c. middle breaker
d. none of the above
bed shaper
152
When middle breaking will be carried out on the field
a. a lister is needed to form a furrow between rows of plant
b. a ridge and furrow soil is made prior to planting
c. hard soil is broken at the middle to reduce its size
d. none of the above
a lister is needed to form a furrow between rows of plant
153
When a material is to be inserted into the soil, the tillage to be
used is
a. jointer
b. coulter
c. injector
d. all of the above
injector
154
When a disk plow is set on vertical position, the plow will
a. penetrate
b. will not penetrate
c. remain in the position
d. none of the above
penetrate
155
A tillage system which consist of fewer or less energy intensive
optimum compared with conventional tillage.
a. minimum tillage
b. no-till tillage
c. reduce tillage
d. all of the above
reduce tillage
156
When 30 % or less of the soil surface is tilled, the tillage operation
employed is
a. minimum tillage
b. strip tillage
c. ridge tillage
d. all of the above
strip tillage
157
A soil-tool reaction in which soil slides over the surface of the
tillage tool without significant adhesion.
a. sliding
b. scouring
c. soil cutting
d. none of the above
scouring
158
Agricultural tractors, self-propelled machines, implement
designed for field operation are examples of
a. farmstead equipment
b. agricultural field equipment
c. agricultural implement
d. none of the above
agricultural field equipment
159
A self-propelled implement
a. requires a tractor in order to do its function
b. requires a stationary engine in order to do its function
c. does not require a tractor to operate
d. none of the above
does not require a tractor to operate
160
A booklet provided by manufacturers in which the step-by-step
procedure for repair or disassembly of parts are given.
a. operator’s manual
b. technical manual
c. product catalog
d. all of the above
technical manual
161
A booklet form provided by manufacturers in which adjustment,
care and maintenance procedure, and safety of the machine are
indicated.
a. operator’s manual
b. technical manual
c. product catalog
d. none of the above
operator’s manual
162
If hitch of a plow is placed above the vertical line of pull,
a. there will be lifting action at front of the plow and its bottom
will tend to run shallow particularly to hard ground
b. the plow share will tend to worn out easily
c. the plow bottom will penetrate deeply
d. none of the above
there will be lifting action at front of the plow and its bottom
will tend to run shallow particularly to hard ground
163
It is the line of pull that is straight from the center-of-load through
the point where the drawbar of the draft is attached to the drawbar
of the tractor.
a. horizontal line draft
b. vertical line draft
c. side draft
d. none of the above
vertical line draft
164
It is the line of draft that is straight line from the center of
resistance or load to the point where plow drawbar is attached to
the tractor drawbar.
a. horizontal line draft
b. vertical line draft
c. side draft
d. none of the above
horizontal line draft
165
When the center-of-load of a plow is not on the same line of the
center of power
a. there will be a side draft.
b. tractor will be partly pulled sideways.
c. forces on the tractor will be carried by the rear of the tractor
wheel.
d. all of the above
all of the above
166
The rate of planting, or pounds of seeds planted per acre that gives
a desired quality of plants without thinning is
a. seeding rate
b. planting to stand
c. planting capacity
d. none of the above
planting to stand
167
A type of power sprayer where the spray pressure is built up by
the direct action of the pump on the liquid spray material
a. hydraulic sprayer
b. blower sprayer
c. hydro-pneumatic sprayer
d. all of the above
hydraulic sprayer
168
The size of a moldboard plow is determined
a. from the distance measured at the wing of the share to the land
side
b. from the width of the plow measured at the intersection of the
share an the moldboard
c. from the width of the moldboard
d. non of the above
from the distance measured at the wing of the share to the land
side
169
Tractor tire used to propel as well as to provide good floatation is,
a. implement tire
b. traction tire
c. steering tire
d. all of the above
steering tire
170
Bearings used for disk plow bottom are
a. tapered roller bearing
b. spherical roller bearing
c. ball bearing
d. none of the above
tapered roller bearing
171
A type of implement that is used to be attached to the three-point
hitch and hydraulic lift system of a tractor.
a. trailing implement
b. semi-mounted implement
c. mounted implement
d. all of the above
mounted implement
172
A compartment provided for the harrow to aid in penetration.
a. weight boxes
b. ballast
c. ballast compartment
d. all of the above
weight boxes
173
If a sprocket is used for a chain, a sheave is used for ...
a. flat belt
b. gear
c. v-belt
d. all of the above
v-belt
174
Substance added to spray as stickers, stabilizers and conditioning
agent
a. water
b. petroleum gas
c. gelatin
d. all of the above
petroleum gas
175
Pump recommended for a sprayer that is used for abrasive spray
materials
a. centrifugal pump
b. diaphragm pump
c. gear pump
d. all of the above
diaphragm pump
176
Approximate pressure used in spraying weedicide.
a. 10-25 psi
b. 25-40 psi
c. 40-60 psi
d. none of the above
25-40 psi
177
To reduce the size of spray particle,
a. increase the operating pressure of the sprayer.
b. adjust the control valve opening of the sprayer.
c. adjust the opening of the spray nozzle.
d. none of the above
adjust the opening of the spray nozzle.
178
A machine used to kill weed seeds by microwave heating during
weeding operation
a. zapper
b. microwave oven
c. flame thrower
d. all of the above
zapper
179
A device used to hold spray nozzle close to the soil so those
chemicals can be sprayed on young grass in the plant row.
a. spray shield
b. spray boom
c. spray holder
d. none of the above
spray shield
180
It is used between the cultivator sweep and the plant row to
prevent soil from covering small young plants.
a. shield
b. fender
c. spread bar
d. none of the above
fender
181
When soil is thrown to the plant during cultivation, the operation
is
a. hilling-up
b. barring-off
c. listing
d. all of the above
hilling-up
182
When soils are thrown away from the plants during cultivation,
the operation is
a. hilling-up
b. barring-off
c. sweeping
d. none of the above
barring-off
183
It is the true point of hitch or center-of-pull of an implement.
a. center of power
b. center of resistance
c. center of load
d. all of the above
center of power
184
The effective drawbar pull of the tractor is reduced for every
percent of grade by
a. 0.1 %
b. 1 %
c. 10 %
d. none of the above
1 %
185
An instrument used to measure the draft of a plow
a. dynamometer
b. spring scale
c. pressure gauge
d. all of the above
dynamometer
186
The maximum friction in the moldboard plow is
a. at the point of share
b. between the share and the moldboard
c. at the moldboard
d. none of the above
at the point of share
187
A secondary tillage implement consisting of one or two in-line
gang rollers used for crushing soil clods and compacting the soil.
a. roller tiller
b. packer
c. roller harrow
d. none of the above
packer
188
A primary or secondary tillage implement used for broadcast or
for strip tillage and also used as chemical incorporators prior to
planting.
a. roller tiller
b. roller harrow
c. packer
d. none of the above
roller tiller
189
It is a plow consisting of a strongly constructed frame and a
vertical leg drawn to a subsoil and the bullet-shape attachment
creates a tube like cavity acting as a drainage channel.
a. subsoiler
b. bullet plow
c. mole plow
d. all of the above
mole plow
190
In designing a rice thresher, the most important factors affecting
threshing efficiency is
a. rpm of the cylinder
b. peripheral speed of the cylinder
c. diameter of the cylinder
d. none of the above
peripheral speed of the cylinder
191
A kind of chemical used for spraying which form a finely-divided
solid particles when mixed with water.
a. emulsion
b. suspension
c. solution
d. all of the above
suspension
192
An insecticide that kills insects when insects suck on plant tissues
a. contact
b. stomach
c. systemic
d. all of the above
systemic
193
A hitch system for a tractor suitable for large, heavy implement
for trailer
a. three-point hitch system
b. drawbar hitch system
c. semi-mounted hitch system
d. all of the above
drawbar hitch system
194
A tractor drive wheel under load rotates at 1200 revolution in
passing a newly cultivated field. At no load, the tractor drive
wheel is able to rotate at 1125 revolution. What is the percent
slippage of the tractor drive wheel?
a. 5.6 %
b. 6.2
c. 8.1 %
d. none of the above
6.2
195
Growing of more than one crop on the same land in one year
a. mixed crop
b. multiple cropping
c. inter-cropping
d. none of the above
multiple cropping
196
Growing of two or more crops simultaneously and intermingled
with no row arrangement.
a. mixed cropping
b. inter cropping
c. multiple cropping
d. none of the above
mixed cropping
197
Growing of two or more crops in alternate rows.
a. inter-planting
b. inter-cropping
c. inter-culture
d. all of the above
inter-cropping
198
It is a practice of planting short term annual crop with long-term
annual or biennial crops.
a. inter-planting
b. inter-cropping
c. inter-culture
d. all of the above
inter-planting
199
It is the cultivation of one crop underneath a perennial crop.
a. inter-planting
b. inter-cropping
c. inter-culture
d. all of the above
inter-culture
200
Application of chemical to a small restricted area, usually to
control the spread of pest.
a. spot treatment
b. space application
c. direct application
d. all of the above
spot treatment
201
Dispersion of liquid or dry particles in air in such a manner that
target pest are exposed to chemical.
a. spot treatment
b. space treatment
c. direct application
d. all of the above
space treatment
202
Application of chemical to the stem, fruit, leaves, needles, or
blades of a plant.
a. direct application
b. foliar application
c. space application
d. all of the above
foliar application
203
Application of chemical to a specific area such as row, bed, or at
base of the plant
a. direct application
b. spot treatment
c. space application
d. none of the above
direct application
204
Application of chemical over entire area to be treated.
a. basal application
b. band application
c. broadcast application
d. none of the above
broadcast application
205
Application of chemical to the base of a tree around the trunk or
by injection into slasher or cuts.
a. basal application
b. broadcast application
c. band application
d. none of the above
basal application
206
Application of chemical in parallel strips leaving the area between
strips free of chemicals.
a. basal application
b. broadcast application
c. band application
d. none of the above
band application
207
Soil blocks or masses that are cut, sheared or broken loose by
tillage tool.
a. furrow slice
b. clod
c. loose soil
d. none of the above
clod
208
It is a change in the value of a machine.
a. cost reduction
b. depreciation
c. lost of value
d. none of the above
depreciation
209
Actual rate performance of machine on land or crop processed in a
given time based upon total field time.
a. theoretical field capacity
b. effective field capacity
c. field efficiency
d. all of the above
effective field capacity
210
The rate of performance obtained if a machine performs its
function 100 % of the time of a given operating speed using 100
% of its theoretical width.
a. theoretical field capacity
b. effective field capacity
c. field capacity
d. none of the above
theoretical field capacity
211
The amount paid for hiring equipment and operating services to
perform a certain task.
a. custom cost
b. operating cost
c. variable cost
d. none of the above
custom cost
212
The ratio of engine power used in performing an operation to
engine power available.
a. field load tractor
b. engine efficiency
c. engine performance ratio
d. all of the above
field load tractor
213
A sprayer designed to charge the spray droplet so that there is a
powerful attraction between the plants and the charged droplet.
a. electromagnetic sprayer
b. electrolytic sprayer
c. electrostatic sprayer
d. all of the above
electrostatic sprayer
214
It is used to protect tractor operator from dust, noise, rain and
heat.
a. operator’s shield
b. chassis
c. cab
d. none of the above
cab
215
A device that transfer seed from the seedbox to the coulter tube at
a fixed rate
a. seed feeder
b. seed distributor
c. seed metering device
d. all of the above
seed metering device
216
A device at the header of a combine for severing the plant stalk.
a. cutting mechanism
b. star wheel
c. pickup
d. none of the above
cutting mechanism
217
A device for gathering crops on a windrow of a combine.
a. header
b. pickup
c. star wheel
d. none of the above
pickup
218
A transport machine used in agriculture suitably designed for
coupling to an agricultural tractor or self-propelled combine.
a. agricultural wagon
b. agricultural loader
c. agricultural trailer
d. none of the above
agricultural trailer
219
A harvest residue discharged from cleaning devices of a combine.
a. foreign matters
b. cut straw
c. chaffs
d. none of the above
chaffs
220
What is the application rate of a granular broadcast spreader
required to apply 1 ton of manure at a distance of 1000 meters.
The machine swath is 2 meters.
a. 500 kg/ha
b. 5000 kg/ha
c. 50,000 kg/ha
d. none of the above
5000 kg/ha
221
An external shaft on an agricultural tractor other than the PTO
which provides rotational power to implements that are usually
front and side mounted.
a. belt drive shaft
b. secondary PTO
c. auxiliary PTO
d. none of the above
auxiliary PTO
222
A rotating device located inside the hopper of gravity flow
applicator and broadcast spreaders to enhance delivery of granules
to the adjustable orifice of the machine.
a. mixer
b. stirrer
c. agitator
d. none of the above
agitator
223
In ASAE, safety code for laboratory equipment and typical
application, the safety yellow color stands for
a. danger stop
b. warning
c. caution
d. none of the above
caution
224
A safety gray color at the ASAE safety code is used for
a. floor or work area around machines and equipment
b. traffic and housekeeping areas
c. areas with radiation hazard
d. all of the above
floor or work area around machines and equipment
225
When pipeline is painted with green and white color, the safety
code means that the pipe contains
a. liquid of inherently low hazard
b. fir extinguishing materials
c. flammable or explosive materials
d. all of the above
liquid of inherently low hazard
226
The standard length of stroke of hydraulic remote control
cylinders for trailing-type agricultural implement is
a. 6 to 12 inches
b. 8 to 16 inches
c. 10 to 20 inches
d. none of the above
8 to 16 inches
227
Assume that you are the Agricultural Engineer of a 500-hectare
corn farm with soil type that gives 10 psi draft when plowing at a
speed of 4 km/hr. Compute the drawbar horsepower required to
pull a three-disk plow with effective cut of 12 inches per disk at a
plowing depth of 6 inches.
a. 14.3 hp
b. 23.4 hp
c. 34.5 hp
d. none of the above
14.3 hp
228
How many hectares in item above does a tractor pulling a three
disk plow would be able to plow in one day (16 hours operation)
assuming a total time loss of 30%?
a. 2 ha/day
b. 4 ha/day
c. 6 ha/day
d. none of the above
4 ha/day
229
How many days in item above are required to plow the 500-
hectare farm using ten units of the same kind of tractor and plow?
a. 8.3 days
b. 12.5 days
c. 15.4 days
d. none of the above
12.5 days
230
What is the amount of fuel consumed in liters per 16 hours day in
item above, of one tractor unit if the specific fuel consumption is 1
lb/dhp-hr and the specific gravity of the fuel is 0.8?
a. 69.7 liters
b. 130.0 liters
c. 95.1 liters
d. none of the above
130.0 liters
231
The perpendicular distance between the upper hitch point and the
common axis of the lower hitch point of a tractor.
a. mast height
b. hitch vertical height
c. stud height
d. none of the above
mast height
232
The distance between lower hitch point measured at the base of
the lower hitch stud, or the distance between the inner most
restraining means provided on the implement.
a. lower hitch-point spread
b. lower hitch point distance
c. lower hitch point clearance
d. none of the above
lower hitch-point spread
233
ASAE classification for slow moving vehicle such as animal-
drawn or motorize conveyance, including implements in tow
should not exceed a travel speed of
a. 30 kph
b. 40 kph
c. 50 kph
d. none of the above
40 kph
234
For safety purposes, slow-moving vehicle such as agricultural
machines must be provided with
a. rear bumper to protect the machine from impact
b. identification emblem to guide motorist that the machine is
slow-moving
c. signal light when travelling
d. none of the above
identification emblem to guide motorist that the machine is
slow-moving
235
What is the cutting width of the single disk harrow set at 18
degree working angle containing 20 disks spaced at 30 cm? Disk
diameter is 40 cm.
a. 553.5 cm
b. 453.7 cm
c. 540.6 cm
d. none of the above
If the harrow in item above is a tandem disk harrow, what is the
cutting width of the machine?
a. 589.5cm
b. 567.4 cm
c. 530.6 cm
d. none of the above
553.5 cm
589.5cm
236
A 30-disk double-offset-disk harrow is travelling at a speed of 10
kph. If the disk diameter is 40 cm spaced at 30cm, what is the
cutting width of the harrow?
a. 860.5 cm
b. 875.4 cm
c. 850.3 cm
d. none of the above
What is the theoretical field capacity of the harrow in item above?
a. 8.6 ha/hr
b. 8.7 ha/hr
c. 8.5 ha/hr
d. none of the above
860.5 cm
8.6 ha/hr
237
The identification of the given tire with its maximum
recommended load when used in specific type service.
a. tire rating
b. tire lug rating
c. ply rating
d. all of the above
ply rating
238
A machine that is used with small plow and harrow designed for
rice farming operation.
a. puddling-type floating tiller
b. power tiller
c. hydro tiller
d. all of the above
power tiller
239
A ribbed type v-belt where the ribs are positioned along the belt
length.
a. V-ribbed belt
b. Cogged belt
c. Timing belt
d. None of the above
V-ribbed belt
240
The center of resistance of moldboard plow is located
a. at the center of moldboard
b. at the intersection of moldboard and share
c. at the center of share
d. none of the above
at the intersection of moldboard and share
241
ASAE stands for
a. American Society of Automotive Engineers
b. American Society of Agricultural Engineers
c. American Society of Air-conditioning Engineers
d. All of the above
American Society of Agricultural Engineers
242
The optimum puddler speed for puddling-type floating tiller is
a. 100-150 rpm
b. 200-250 rpm
c. 300-350 rpm
d. none of the above
200-250 rpm
243
Part of soil profile exploited by the roots of the plant.
a. root bed
b. root zone
c. tillage zone
d. none of the above
root zone
244
The soil profile modified by tillage or amendments for use by
plant roots
a. root bed
b. root zone
c. tillage zone
d. none of the above
root bed
245
When plowing requires for the soil to be incorporated or mixed
with grasses and weeds, as an Agricultural Engineer you will
recommend
a. disc plow
b. rotary plow
c. moldboard plow
d. all of the above
rotary plow
246
Manual transplanting of rice is advantageous over mechanical rice
transplanter in terms of
a. intelligence
b. dexterity
c. cost
d. none of the above
dexterity
247
If soil clods are needed to be inverted during plowing, the
agricultural engineer will recommend a
a. disc plow
b. moldboard plow
c. all of the above
moldboard plow
248
An agricultural engineer will recommend in order to loosen the
soil during plowing, a
a. subsoiler
b. field cultivator
c. chisel plow
d. none of the above
chisel plow
249
It is a factor which consider the physical condition, heart-beat
ratio, and body weight of a person when operating a machine.
a. humanistic factor
b. mechanical operation factor
c. ergonomic factor
d. all of the above
ergonomic factor
250
Ten-hectares of rice farm is to be harvested manually in 2 days
using sickle (8hr/day). If the field efficiency is 80 % and the man-
hour/hectare for harvesting is 60, how many persons will be
needed to harvest the rice?
a. 27 persons
b. 37 persons
c. 47 persons
d. none of the above
47 persons
251
Compute the power developed by 600 kg horse pulling 80-kg load
at a speed of 0.9 m/sec.
a. 0.94 hp
b. 0.87 hp
c. 0.99 hp
d. none of the above
0.94 hp
252
It is a part of seeder that eventually distributes seed in rows.
a. metering device
b. drive wheel
c. seed hopper
d. none of the above
metering device
253
It is a machine which has one or more elements that rotates about
a vertical axis and cut grass by impact.
a. rotary mower
b. grass cutter
c. power scythe
d. all of the above
rotary mower
254
The pivotal point of connection of hitch to the tractor or a center
of the articulated connection between link and the implement.
a. link point
b. hitch pin
c. hitch point
d. all of the above
hitch point
255
A part of mechanism that they may be added to a functional
power unit, not utilizing its mechanical power for the purpose of
enhancing the performance of that unit.
a. auxillary unit
b. spare parts
c. accessory
d. none of the above
accessory
256
Power take-off rpm of lawn mower and garden ride-on tractors.
a. 1000 rpm
b. 540 rpm
c. 2000 rpm
d. none of the above
2000 rpm
257
A frame for protection of operators of compact utility tractors to
minimize the possibility of serious crushing injury to the operator
resulting from accidental upset.
a. roll bar
b. tractor shield frame
c. roll-over protection structure
d. none of the above
roll-over protection structure
258
Maximum tire inflation pressure for agricultural implement.
a. 40 psi
b. 60 psi
c. 100 psi
d. none of the above
60 psi
259
A sprayer containing 100 liters of mixture operates at a nozzle
discharge of 0.2 liters per minute per nozzle. If the sprayer boom
consist of 6 nozzles, what time does the sprayer mixture be
changed?
a. 2.5 hrs
b. 1.39 hrs
c. 6.8 hrs
d. none of the above
1.39 hrs
260
It is a structural member of an implement where tillage tool to be
a beam attached.
a. boom
b. shank
c. gang
d. none of the above
shank
261
Warranty of parts and services for heated-air mechanical grain
dryer based on PAE Standard is within ____ after the acceptance of
the machine.
a. 6 months
b. 12 months
c. 18 months
d. 24 months
e. None of the above
12 months
262
It is the ratio of the heat released by the fuel of a heated air
mechanical dryer to the theoretical heat available from the fuel.
a. Burner efficiency
b. Furnace efficiency
c. Combustion efficiency
d. None of the above
Combustion efficiency
263
In testing agricultural machines as prescribed in the PAES standard
of test, it should be operated by ______.
a. Farmers
b. Traders/Cooperatives
c. Manufacturer(s) representative
d. Accredited Testing Organization
e. None of the above
Manufacturer(s) representative
264
Holding capacity of mechanical dryer during testing as prescribed
by PAES should be based on the _____ and other accompanying
information such as moisture content and purity
a. volume
b. weight
c. density
d. None of the above
weight
265
Milling test of samples during the test of mechanical grain dryer
based on the PAES standard test should be conducted at least _____
after drying test.
a. 24 hours
b. 48 hours
c. 36 hours
d. None of the above
48 hours
266
Thermometer sensors during testing of agricultural machines
should be partially shielded to minimize ______.
a. mechanical damage of thermometer sensor
b. error from heat of radiation effect
c. error from conduction of heat from wall of the machine
d. None of the above
error from heat of radiation effect
267
The minimum number of trial(s) required in testing heated air
mechanical grain dryer as specified in PAES.
a. one
b. two
c. three
d. None of the above
two
268
Time interval of measurement of test parameters in heated air
mechanical dryer as specified in the PAES Test Method.
a. 15 minutes
b. 30 minutes
c. 45 minutes
d. 60 minutes
30 minutes
269
Commonly used threshing cylinder for axial flow rice thresher.
a. peg-tooth
b. rasp bar
c. wire loop
d. None of the above
peg-tooth
270
The shaft rpm of a rice thresher will need to be _____ if the
diameter of the threshing cylinder is reduced.
a. increased
b. reduced
c. remain the same
d. None of the above
increased
271
Warranty for the construction and durability of mechanical rice
thresher according to PAES standard shall be within _____ after the
purchased of the machine.
a. 6 months
b. 12 months
c. 18 months
d. 24 months
e. None of the above
6 months
272
All rotating parts of agricultural machines as provided in the PAE
Standards should be _______
a. rigid
b. dynamically balanced
c. uniform in speed
d. None of the above
dynamically balanced
273
Which of the following parts are treated to be dangerous as stated
in Philippine Agricultural Engineering Standards for ensuring
safety in agricultural machineries.
a. Pulleys
b. clutches
c. coupling
d. All of the above
All of the above
274
Recommended material in the manufacture of pin sleeve and hitch
pin for walking type power tiller.
a. mild steel
b. cold-rolled steel
c. Spring steel
d. None of the above
cold-rolled steel
275
A centrifugal pump that develops a vacuum sufficient enough for
atmospheric pressure to force the liquid though the suction pipes
into the pump casing with out initially feeding the pump to create
suction.
a. pressure pump
b. self-priming pump
c. mixed flow pump
d. None of the above
self-priming pump
276
A type of pump which develop most of the suction and discharge
head by propelling or lifting action of the impeller vanes on the
water.
a. axial flow pump
b. Centrifugal pump
c. Mixed flow pump
d. None of the above
axial flow pump
277
It is the formation of void spaces filled with water vapor due to
local pressure drop and collapse as soon as the vapor bubbles reach
regions of high pressure.
a. water hammer
b. cavitation
c. bubling
d. none of the above
cavitation
278
A type of pump with vanes or impellers rotating inside a close
housing which draws water into the pump through a central inlet
opening and forces the water out through a discharge outlet at the
periphery of the housing.
a. axial flow pump
b. centrifugal pump
c. mixed flow pump
d. none of the above
centrifugal pump
279
A type of pump which combines some of the feature of both the
centrifugal and axial pump and in which head is developed partly
by the centrifugal force and partly by the lift of the vanes on the
water.
a. self-priming pump
b. diffuser-type centrifugal pump
c. mixed flow pump
d. none of the above
mixed flow pump
280
This represents the interrelationship between capacity, head, power,
NPSH, and the efficiency of the pump.
a. pump characteristics
b. performance curve
c. pump laws
d. none of the above
performance curve
281
It is the filling up of water in the pump to evacuate the entrapped
air through a vent and create a liquid seal inside the casing.
a. Feeding
b. recharging
c. priming
d. None of the above
priming
282
The cylinder diameter of mechanical rice thresher is the measured
distance from _______.
a. the base of the threshing element passing through the shaft axis.
b. the tip of the threshing element passing though the shaft axis.
c. the outlet of the cylinder cover
d. none of the above
the tip of the threshing element passing though the shaft axis
283
The maximum moisture content of grain to be used for testing
mechanical thresher should not be more than _____
a. 18%
b. 24%
c. 28 %
d. None of the above
24%
284
The grain-straw ratio for samples to be used for testing should be at
the ranged of ________.
a. 0.35 to 0.50
b. 0.50 to 0.65
c. 0.65 to 0.80
d. None of the above
0.50 to 0.65
285
The minimum number of hours required in testing rice thresher
based on PAE standards.
a. 0.5 hour
b. 1 hour
c. 2 hours
d. None of the above
1 hour
286
A thresher has a capacity of 30 cavans per hour. Three men are
required to operate the thresher. The other data are as follows:
Purchase price = P40, 000 including engine
Utilization = 1, 500 hours per year, 8
hours/day
Estimated life = 7 years
What is the depreciation cost using straight line method?
a. 6, 568.35/year
b. 3, 784.56/year
c. 5, 142.86/year
d. none of the above
5, 142.86/year
287
What is the total fixed cost in the item above if the cost of money is
21 % per annum?
a. 10, 542.86/year
b. 13, 542.86/year
c. 12, 542.86/year
d. none of the above
13, 542.86/year
288
What is the total variable cost in the item above using the following
additional data?
Size of engine = 10 hp
Specific fuel consumption = 0.85 lb/BHP-hr
Cost of fuel = P13.60/liter
Fuel specific gravity = 0.76
Salary of Laborers = P100.00/day-person
a. 159, 882.00/year
b. 234, 765.00/year
c. 456,854.00/year
d. none of the above
159, 882.00/year
289
What is the threshing cost for the thresher above?
a. P3.85/cavan
b. P2.87/cavan
c. P2.78/cavan
d. None of the above
P3.85/cavan
290
It is a metallic or synthetic lining for a hole which reduces or
prevents abrasion between components of a machine.
a. bearing
b. bushing
c. gasket
d. All of the above
bushing
291
A heat treatment method to increase the hardness of steel by rapid
cooling.
a. tempering
b. quenching
c. annealing
d. none of the above
quenching
292
A gas-metallic arc welding which uses inert gas shielding to
produce a cleaner and sounder weld compared with conventional
welding.
a. gas welding
b. MIG welding
c. TIG welding
d. all of the above
MIG welding
293
A widely used method of welding aluminum, copper, stainless
steel, and other difficult-to-weld metals.
a. TIG welding
b. MIG welding
c. gas welding
d. all of the above
TIG welding
294
A device suitable for cutting stainless steel plate.
a. shear cutter
b. plasma cutter
c. acetylene gas cutter
d. all of the above
plasma cutter
295
Ductility which is one of the properties of metals refers to:
a. its resistance to penetration
b. how much the material is deformed
c. how much the material absorb impact before it breaks
d. all of the above
how much the material is deformed
296
A type of bearing used to restrain endwise motion of a turning
shaft or withstand axial load.
a. ball bearing
b. thrust bearing
c. roller bearing
d. none of the above
thrust bearing
297
A drive where shafts are operating on a counter clockwise
directions.
a. open drive belt
b. chain and sprocket
c. gears
d. all of the above
gears
298
Adrive where shafts are operating in a uni-direction.
a. gears
b. cross-belt
c. chain and sprocket
d. none of the above
chain and sprocket
299
A belt transmission suitable for cross-drive system.
a. v-belt
b. timing v-belt
c. flat belt
d. none of the above
flat belt
300
If the pulley to be driven requires to be turned in counterclockwise
direction, what drive system would you recommend?
a. open drive
b. quarter-turn drive
c. cross-drive
d. all of the above
cross-drive
301
When one pulley is to be driven horizontally and the other pulley
is to be driven vertically, what drive system would you
recommend?
a. open drive
b. quarter turn drive
c. cross drive
d. all of the above
quarter turn drive
302
It is a power transmission device used to deliver misaligned shaft.
a. gears
b. sprocket and chain
c. universal joint
d. all of the above
universal joint
303
It is a kind of steel used in making disk plow bottom.
a. tool steel
b. soft-centered steel
c. molybdenum steel
d. none of the above
soft-centered steel
304
When welding deposit is applied to strengthen peg-tooth of a rice
thresher, this method of treating metal is used.
a. heat treatment
b. welding
c. hard facing
d. none of the above
hard facing
305
Mixing of two or more substances wherein one of which is metal.
a. casting
b. forging
c. alloying
d. none of the above
alloying
306
If some belts on multiple v-belt drive are worn out, it is
recommended that
a. worn-out belts should be immediately replaced
b. wait until all belts are worn-out before replacing the belts
c. all belts should be replaced
d. none of the above
all belts should be replaced
307
Which of the following v-belt is larger and stronger?
a. type A
b. type B
c. type C
d. all of the above
type C
308
Commonly used V-belt for agricultural operation in the
Philippines.
a. type A
b. type B
c. type C
d. all of the above
type B
309
A service offered by manufacturers in repairing and replacing
unintentionally damaged part of a machine to its customers for a
specified period.
a. manufacturing service
b. customer’s service
c. after-sales-service
d. all of the above
after-sales-service
310
Cost of machine including shipment.
a. free-on-board
b. freight-on-board
c. cost-in-freight
d. none of the above
freight-on-board
311
The strength, durability, and service of a farm machine depends
largely on
a. cost of material
b. weight of material
c. quality of material
d. all of the above
quality of material
312
A substance commonly used as coating to protect iron against
corrosion.
a. tin
b. zinc
c. aluminum
d. all of the above
zinc
313
When buying flat belt, the common parameters used are
a. width and thickness
b. width and ply no.
c. width and weight
d. none of the above
width and ply no.
314
A v-belt whose specification is B-32 means.
a. type B with circumferential length of 32 inches
b. type B with circumferential length of 32 cm
c. standard type v-belt whose strength is 32 times stronger than
type B
d. none of the above
type B with circumferential length of 32 inches
315
In a variable-pitch sheaves, the recommended belts used are
a. double v-belt
b. timing v-belt
c. adjustable speed belt
d. none of the above
adjustable speed belt
316
A device that gives mechanical advantage.
a. fulcrum
b. pulley
c. wheel and axle
d. all of the above
all of the above
317
The smallest gears that are meshing together.
a. spur
b. bevel
c. pinion
d. all of the above
pinion
318
A type of gear used for power-take off drive.
a. worm gear
b. spur gear
c. spline shaft gear
d. none of the above
spline shaft gear
319
If roller chain number 40 is to be replaced by no. 60, the strength
of chain will
a. decrease
b. increase
c. remain except the size
d. none of the above
increase
320
The ASAE designation for adjustable speed v-belt is.
a. HA to HD
b. HAA to HCC
c. HI to HO
d. All of the above
HI to HO
321
What is the length of arc of a v-belt on a 6 inches sheaves whose
angle subtended by the arc of belts is equal to 90 degree.
a. 4.69 in
b. 3.49 in.
c. 6.94 in.
d. none of the above
4.69 in
322
A component part of machine that transmits torque and speed is
a. bearing
b. shaft
c. chain
d. none of the above
shaft
323
If the shaft of an engine rotates at the same speed with the shaft of
the driven machine on the same axis, the transmission system is
a. belt and pulley
b. sprocket and chain
c. direct couple drive
d. none of the above
direct couple drive
324
A pulley that is used to tighten belt in a drive system.
a. flat pulley
b. idler pulley
c. v-pulley
d. none of the above
idler pulley
325
A grove that is placed on a shaft to prevent pulley from slippage.
a. keyway
b. keyhole
c. key
d. none of the above
keyway
326
The recommended drive to transmit power to a shaft located about
6 meters is
a. chain drive
b. gear drive
c. v-belt drive
d. none of the above
none of the above
327
If the desired rotation for two parallel shafts is counterclockwise,
what flat-belt drive would you recommend?
a. open drive
b. quarter turn drive
c. cross drive
d. all of the above
cross drive
328
If a large factor of safety is used in the design, product would tend
to be
a. reliable
b. expensive
c. efficient
d. none of the above
expensive
329
Standards are used in the design basically to
a. reduce cost of the product
b. minimize potential liability in designing product
c. provide easy mechanism for interchanging machinery parts
d. all of the above
all of the above
330
A metal sheet with gauge number equal to 14 means
a. 14 mm thick
b. 14 pieces of metals sheet in a stock
c. 14 pieces in one inch thickness
d. none of the above
14 pieces in one inch thickness
331
A 4 feet wide x 8 feet long with 1/8-in. thick is
a. metal sheet
b. metal plate
c. metal strip
d. none of the above
metal plate
332
A material commonly used as axle of agricultural machines.
a. cold rolled steel shaft
b. malleable steel round bar
c. round cast iron
d. none of the above
cold rolled steel shaft
333
The factor that affects the horsepower requirement of a shaft.
a. torque
b. rpm shaft
c. peripheral velocity of shaft
d. all of the above
all of the above
334
Flat pulleys are provided with crown to
a. keep the required tension of belt
b. prevent belt slippage
c. make the pulley durable
d. none of the above
prevent belt slippage
335
If the driver pulley diameter is increased, the speed of the driven
pulley will
a. decrease
b. increase
c. rotate at the same speed
d. none of the above
increase
336
If the two shafts are perpendicular with each other, what type of
driven system would you recommend?
a. flat belt
b. v-belt
c. sprocket and chain
d. all of the above
flat belt
337
The transmission ratio of power tiller ranged from
a. 1:2 to 1:4
b. 1:7 to 1:10
c. 1:12 to 1:16
d. all of the above
1:7 to 1:10
338
A gauge 20 metal sheet in a 2-inch pile of sheet has
a. 20 sheets
b. 40 sheets
c. 60 sheets
d. none of the above
40 sheets
339
An alloy basically consist of
a. one metal
b. two metal or more metals
c. one metal and non-metal
d. none of the above
two metal or more metals
340
Steel bars which are commonly used in the construction of
agricultural machines.
a. spring steel
b. mild steel
c. cold rolled steel
d. none of the above
mild steel
341
A steel bar used as machine axle is
a. hot rolled steel
b. cold rolled steel
c. mild steel
d. none of the above
cold rolled steel
342
It is a welding process that uses an electrode.
a. gas welding
b. resistance welding
c. arc welding
d. none of the above
arc welding
343
The standard length of bars available at the hardware is.
a. 10 ft
b. 20 ft
c. 30 ft
d. none of the above
20 ft
344
The higher is the gauge number of a metal sheet, the lower is the
a. thickness
b. width
c. length
d. none of the above
thickness
345
A welding process commonly used for thin sheets of metal.
a. brazing
b. soldering
c. spot welding
d. none of the above
soldering
346
It is a process of making metal product by pouring melted metal
into a mold and then allowed to cool.
a. hot working process
b. casting
c. powder metallurgy
d. none of the above
casting
347
A machine tool used to reduce the diameter of a metal
a. router
b. power drill
c. lathe
d. none of the above
lathe
348
It is the process of cutting hole to a material by means of shearing
process.
a. drilling
b. punching
c. boring
d. none of the above
punching
349
A sand paper with a number of C-300 is finer than
a. C-120
b. C-400
c. C-600
d. None of the above
C-120
350
A screw used to fix metal parts together.
a. self-tapping screw
b. cap screw
c. lag screw
d. none of the above
self-tapping screw
351
A screw with shield to fix material properly together.
a. cap screw
b. tex screw
c. self –tapping screw
d. none of the above
none of the above
352
If a metal has a thickness of 1/8 inch it is called as
a. strips
b. sheet
c. plate
d. all of the above
plate
353
When buying angle bars, the right specification is
a. thickness and width
b. thickness and length
c. width and length
d. all of the above
thickness and width
354
Which of the following metals is stronger?
a. tool steel
b. spring steel
c. stainless steel
d. all of the above
tool steel
355
The higher the carbon content of steel, the
a. weaker
b. stronger
c. smaller
d. bigger is the steel
stronger
356
A tool that can cut metal bar faster.
a. shear cutter
b. band saw
c. grinding wheel
d. none of the above
grinding wheel
357
Filing is classified as
a. cold working
b. hot working
c. casting
d. none of the above
cold working
358
Ability of material to resist indention.
a. brittleness
b. toughness
c. hardness
d. all of the above
hardness
359
Property of material to join together with other metal at liquid
state.
a. ductility
b. workability
c. fusibility
d. none of the above
fusibility
360
A machine element used to tighten bolt.
a. washer
b. rivet
c. nut
d. all of the above
nut
361
A welding process wherein current is allowed to pass through the
prongs of the welding machine which joined two metal sheets
together.
a. resistance welding
b. oxyacetylene welding
c. arc welding
d. none of the above
resistance welding
362
A material that is resistant to salt corrosion.
a. mild steel
b. cast iron
c. stainless steel
d. all of the above
stainless steel
363
Which of the metal sheets is thicker than from gauge 20?
a. gauge 18
b. gauge 22
c. gauge 24
d. two of the above
gauge 18
364
Materials suitable to resist rusting.
a. GI sheet
b. BI sheet
c. All of the above
d. None of the above
GI sheet
365
Paint that is most suitable for metals.
a. latex paint
b. enamel paint
c. acrylic paint
d. none of the above
acrylic paint
366
Which of the following is used for acrylic paint.
a. paint thinner
b. lacquer thinner
c. primer epoxy
d. none of the above
none of the above
367
A coating material to protect metal from rusting.
a. primer epoxy
b. red oxide
c. red lead
d. all of the above
all of the above
368
It is used to keep castellated nut from loosening
a. roller pin
b. spring
c. cotter pin
d. none of the above
cotter pin
369
Designation for standard V-belt are
a. A, B, C, D, E
b. HA, HB, HC, HD, HE
c. AA-BB-CC-DD-EE
d. None of the above
A, B, C, D, E
370
It is used to prevent bolt and nut from loosening.
a. washer
b. spring
c. screw
d. none of the above
washer
371
A machine element that is used to drive flat belt.
a. pulley
b. sprocket
c. shieve
d. none of the above
pulley
372
If the belt has a capacity rating of 4.5 hp per belt, how many
numbers of belts are needed for the drive?
a. 1 to 2 belts
b. 2 to 3 belts
c. 4 to 6 belts
d. none of the above
2 to 3 belts
373
It is used to fasten two machine parts together with the use of nut.
a. bolt
b. screw
c. rivet
d. none of the above
bolt
374
A type of gear used to connect implement shaft to the tractor PTO
shaft
a. bevel gear
b. spline shaft gear
c. spur gear
d. none of the above
spline shaft gear
375
A gasoline engine runs at 2500 rpm. It will be used to drive a
burr mill which should turn at 500 rpm. The pulley diameter for
the mill is 8 inches. What is the recommended pulley for the
engine?
a. 2 in
b. 4 in
c. 10 in
d. none of the above
2 in
376
A centrifugal blower shall be driven by a gas engine. The set up
are as follows: Engine speed =2200 rpm; Blower speed=1800
rpm; Diameter of Engine Pulley=25 cm. What should the
diameter of the blower pulley be ?
a. 28 cm
b. 31 cm
c. 61 cm
d. none of the above
31 cm
377
Compute the length of belt for the flat-belt pulley having the
following data:
Diameter of the larger pulley = 1800 mm, Diameter of the
smaller pulley = 400 mm, Center distance of the pulley shaft = 10
meters
a. 15 m
b. 23 m
c. 30 m
d. none of the above
23 m
378
A rice thresher is to be driven by 10-hp gasoline engine using a V-
belt drive. The engine is 1800 rpm while the thresher cylinder
speed is 650 rpm. The diameter of the engine pulley is 4 inches.
What will be the recommended diameter of the thresher’s pulley?
a. 6 in.
b. 10 in.
c. 14 in.
d. none of the above
10 in
379
What is the recommended belt size for the B-type V-belt needed
for the drive above, if its center distance is 60 in.?
a. B169
b. B192
c. C192.
d. none of the above
B192
380
Recommend for the size of the shaft needed the thresher above.
a. 1⁄2 in.
b. 3⁄4 in
c. 1 in
d. none of the above
3⁄4 in
381
The length of chain usually expressed in
a. inches
b. meters
c. pitches
d. none of the above
pitches
382
A device usually used to connect two shafts on a direct drive
system.
a. clutch
b. coupler
c. pulley
d. none of the above
coupler
383
AGMA stands for
a. American Gear Machinery Association
b. Association of Gear Manufacturers of America
c. American Gear Manufacturers Association
d. None of the above
American Gear Manufacturers Association
384
The reason why gears are used for agricultural machinery because
a. It is expensive and durable.
b. It transmit high power and efficiency and with long service
life.
c. It is low operating and maintenance cost.
d. None of the above
It transmit high power and efficiency and with long service
life.
385
It is the spacing of the gear teeth measured along the pitch circle.
a. Addendum
b. Dedendum
c. Circular pitch
d. None of the above
Circular pitch
386
It is the ratio of the input power and the output power in gears
a. Gear efficiency
b. Gear ratio
c. All of the above
d. None of the above
Gear efficiency
387
It is the most common type of gear used in agricultural machinery
with straight and parallel teeth to the shaft axis.
a. Worm gear
b. Bevel gear
c. Spur gear
d. All of the above
Spur gear
388
A gear commonly used for gear reducers or gear motors.
a. Worm gear
b. Bevel gear
c. Spur gear
d. All of the above
Worm gear
389
A gear used for intersecting shaft usually at right angles.
a. Worm Gear
b. Bevel gear
c. Spur gear
d. All of the above
Bevel gear
390
A gear rotating at 800 rpm. It is being driven by another gear at
400 rpm. What is the speed ratio of the gear drive?
a. 2
b. 1⁄2
c. 1
d. All of the above
2
391
The service factor used in calculating the design power for gears
includes
a. Type of load
b. Type of lubrication
c. All of the above
d. None of the above
All of the above
392
A device used to transmit power by connecting shafts together.
a. Flexible coupling
b. Rigid coupling
c. All of the above
d. None of the above
All of the above
393
Flat pulleys are usually provided with crown to
a. Prevent belt from slipping
b. tighten the belt
c. increase the strength of pulley
d. None of the above
Prevent belt from slipping
394
A 4 inches wide flat belt is to be used for driving 12 inches and 24
inches flat pulleys. What width of the pulleys would you
recommend for the drive?
a. 4 inches
b. 5 inches
c. 6 inches
d. All of the above
5 inches
395
Flat pulleys are crowned by making the center diameter larger
than the edge diameter by
a. 1/8 in per foot of face width
b. 1/8 in per foot of the pulley diameter
c. 1/8 in per foot of the belt with
d. None of the above
1/8 in per foot of face width
396
A motor running at a speed of 1725 rpm is driving a fan at a
speed 2100 rpm. The motor pulley is 127 mm. What is the speed
of the belt that drives the fan?
a.. 688.24 m/min
b. 868.24 m/min
c. 886.24 m/min
d. None of the above
688.24 m/min
397
Timing belt is commonly known as
a. Conventional flat belt
b. Grooved belts
c. Positive drive belt
d. All of the above
Positive drive belt
398
It is commonly used belt drive for engine driven multi-pass rice
mill.
a. Flat belt
b. V-belt
c. Groove belts
d. None of the above
Flat belt
399
When ordering flat belt, the parameters need to be specified
includes:
a. Width and thickness
b. width and ply
c. thickness and ply
d. None of the above
width and ply
400
Drive used to run perpendicular shaft.
a. Open belt drive
b. Crossed drive
c. Quarter turn drive
e. None of the above
Quarter turn drive
401
If two flat parallel pulleys is to be drive in opposite direction,
what would you recommend for this drive?
a. Open belt drive
b. Crossed drive
c. Quarter turn drive
d. None of the above
Crossed drive
402
The length of chain is usually measured in terms of
a. feet
b. inches
c. pitches
d. None of the above
pitches
403
RC-50 chain is stronger compared with
a. RC-60
b. RC-40
c. RC-70
d. None of the above
RC-40
404
For slow speed operation, the recommended number of teeth for
sprocket is
a. 11 teeth
b. 16 teeth
c. 24 teeth
d. None of the above
16 teeth
405
The recommended minimum number of sprocket teeth for high
speed operation.
a. 14-16 teeth
b. 18-24 teeth
c. 28-30 teeth
d. None of the above
18-24 teeth
406
The slack strand for chain with horizontal center should be located
on
a. Upper side
b. Lower side
c. Both sides
d. None of the above
Lower side
407
The size of chain is usually specified in terms of
a. Diameter of roller chain
b. length of chain
c. Roller chain number
d. None of the above
Roller chain number
408
Twenty-hp engine is equal to.
a. 1524.44 kg-m/sec
b. 1254.2 kg-m/sec
c. 1425.44 kg-m/sec
d. none of the above
1524.44 kg-m/sec
409
The amount of material needed in testing thresher should have
enough samples to run the machine for at least _____ hour
a. one-half
b. one
c. two
d. All of the above
one
410
An engine rated at 100 pferd starke has an equal rating of ____
hp.
a. 96.8
b. 98.6
c. 101.4
d. none of the above
98.6
411
It is a constant volume combustion cycle.
a. Otto cycle
b. Diesel cycle
c. Dual cycle
d. None of the above
Otto cycle
412
It is a constant pressure combustion cycle
a. Otto cycle
b. Diesel cycle
c. Dual cycle
d. None of the above
Diesel cycle
413
An engine that burns fuel inside the cylinder.
a. external combustion engine
b. internal combustion engine
c. sterling engine
d. none of the above
internal combustion engine
414
Part of engine that which slides up and down the cylinder and
transmits power to
the crankshaft.
a. connecting rod
b. cylinder block
c. piston
d. spark plug
piston
415
Amount of power that the manufacturer specified for an engine.
a. indicated horsepower
b. brake horsepower
c. rated horsepower
d. belt horsepower
rated horsepower
416
Distance of movement of piston from the top dead to the bottom
dead center.
a. stroke
b. bore
c. valve clearance
d. none of the above
stroke
417
Reduction of engine speed or flow of fuel.
a. throttling
b. clutching
c. atomization
d. none of the above
throttling
418
A device which uses fluid power to produce mechanical force and
motion.
a. governor
b. accumulator
c. actuator
d. none of the above
actuator
419
A mechanical breaking up of fuel into spray droplets by high
velocity of air passing through a jet.
a. atomization
b. carburetion
c. turbo charging
d. none of the above
atomization
420
A device that is used to actuate the throttle of an engine to
increase its speed.
a. governor
b. accelerator
c. actuator
d. none of the above
accelerator
421
Usable power delivered by the engine.
a. indicated horsepower
b. brake horsepower
c. rated horsepower
d. none of the above
brake horsepower
422
A device that meter the fuel and air and mixes them into
harmonious mixture before the mixture enters the combustion
chamber of an engine.
a. governor
b. air injector
c. carburetor
d. all of the above
carburetor
423
A device that permits the flow of fuel and of burned gases in one
direction only.
a. check valve
b. relief valve
c. spark plug
d. none of the above
check valve
424
An internal combustion engine that produces power in one
revolution of the crankshaft.
a. four stroke cycle engine
b. two stroke cycle engine
c. rotary engine
d. none of the above
two stroke cycle engine
425
A device that provides ignition to a gasoline engine.
a. flywheel
b. fuel injector
c. carburetor
d. spark plug
e. none of the above
spark plug
426
During the power stroke, which of the following valve is open?
a. intake
b. exhaust
c. intake and exhaust
d. none of the above
none of the above
427
Number of spark plugs for 6 cylinder diesel engine.
a. 6
b. 12
c. 4
d. none of the above
none of the above
428
The volume displaced by a piston in making upward or downward
stroke.
a. piston displacement volume
b. clearance volume
c. total volume
d. none of the above
piston displacement volume
429
At the downward stroke of two-stroke cycle engine, which of the
events are taking place.
a. power & intake
b. compression & exhaust
c. power & exhaust
d. none of the above
power & intake
430
The ratio of the clearance volume from the total volume.
a. compression ratio
b. air fuel ratio
c. bore stroke ratio
d. none of the above
compression ratio
431
Power transmitted to the pistons by the gas in the cylinder.
a. brake horsepower
b. indicated horsepower
c. drawbar horsepower
d. flywheel horsepower
indicated horsepower
432
Suppose a 4-cylinder engine has a bore of 3.5 in. and a stroke of
4.0 in, what is the engine displacement.
a. 154 in3
b. 175 in3
c. 225 in3
d. none of the above
154 in3
433
An engine has a piston displacement of 38.4 in3. If the clearance
volume of the cylinder is 2.5 in3, what is its compression ratio?
a. 1:12
b. 1:16
c. 1:8
e. none of the above
1:16
434
Number of explosion of piston on a single cylinder, four stroke
cycle engine in 100 revolution of the crankshaft.
a. 100
b. 50
c. 25
d. none of the above
50
435
A device that connects and disconnects power input to the power
output.
a. clutch
b. gear
c. pulley
d. none of the above
clutch
436
The space when the piston is at the top dead center.
a. piston displacement volume
b. clearance volume
c. total volume
e. none of the above
clearance volume
437
How many piston strokes are there in one revolution of a
crankshaft?
a. one
b. two
c. four
d. none of the above
two
438
Engine having fuel injected into the combustion chamber near the
end of the combustion stroke and is ignited by heat of
compression only.
a. gasoline engine
b. diesel engine
c. steam engine
d. none of the above
diesel engine
439
Number of times the exhaust valve opens in 2-stroke cycle engine
running at 2000 rpm.
a. 1000
b. 2000
c. 1500
d. none of the above
none of the above
440
What is the indicated horsepower of a four-stroke, six-cylinder
engine having a 4” bore and 4” stroke. The engine is 1500 rpm
and the mean effective pressure is 80 psi.
a. 35 hp
b. 45 hp
c. 52 hp
d. none of the above
45 hp
441
The sequence by which the cylinder delivers the power stroke.
a. ignition
b. firing order
c. flash point
d. none of the above
firing order
442
Engine that burns fuel outside the cylinder.
a. spark ignition engine
b. external combustion engine
c. compression ignition engine
d. none of the above
external combustion engine
443
At the intake stroke of a diesel engine, what comes in?
a. fuel and air
b. fuel
c. air
d. none of the above
air
444
A device that creates ignition of fuel in a diesel engine.
a. spark plug
b. piston
c. carburetor
d. none of the above
piston
445
Two pistons running at the same time in the same direction but
performing different strokes.
a. running mate
b. firing order
c. valve timing
d. none of the above
running mate
446
Firing order of 4 cylinder engine.
a. 1-2-3-4
b 1-3-4-2
c 1-4-2-3
d. none of the above
Firing order of 4 cylinder engine.
a. 1-2-3-4
b 1-3-4-2
c 1-4-2-3
d. none of the above
447
How many times the intake valve opens in 4-stroke-cycle engine
running at 2000 rpm.
a. 1000
b. 2000
c. 500
d. none of the above
1000
448
A device which connects or disconnects engine crankshaft to the
or from the transmission box or driven machine.
a. differential gear
b. clutch
c. actuator
d. none of the above
clutch
449
Two-stroke six-cylinder-internal-combustion engine has a
cylinder bore of 4 inches and a stroke of 4 inches. If the engine is
running at a speed of 1500 rpm, what is the indicated horsepower
of the engine? The mean effective stroke is 80 psi.
a. 85 hp
b. 92 hp
c. 102 hp
d. none of the above
92 hp
450
Firing order for 6-cylinder engine straight and V-piston.
a. 1-5-3-6-2-4
b. 1-4-2-6-3-5
c. 1-2-3-4-5-6
d. none of the above
none of the above
451
Firing order for 8 cylinder V piston.
a. 1-6-8-4-3-2-1-5
b. 1-8-7-3-6-5-4-2
c. all of the above
d. none of the above
1-8-7-3-6-5-4-2
452
Engine mechanical efficiency.
a. brake hp over indicated hp
b. rated hp over indicated hp
c. friction hp over flywheel hp
d. none of the above
brake hp over indicated hp
453
Number of times the intake valve opens in a single-cylinder four-
stroke cycle after completing 200 revolutions.
a. 200
b. 100
c. 50
d. none of the above
100
454
What is the mechanical efficiency of an engine having a brake
horsepower of 8 hp and an indicated horsepower of 10 hp?
a. 20 %
b. 40 %
c. 60 %
d.. 80 %
80 %
455
Part of an engine that converts reciprocating motion into rotary
motion.
a. crankshaft
b. piston
c. camshaft
d. none of the above
crankshaft
456
Engine system that reduces the temperature of the cylinder.
a. ignition
b. carburetion
c. cooling
d. none of the above
cooling
457
System of number indicating the ignition quality of diesel fuel.
a. octane rating
b. cetane rating
c. fuel index
d. none of the above
cetane rating
458
Ten-hp engine is equivalent to.
a. 7.46 kw
b. 76.4 watt
c. 0.746 kw
d. none of the above
7.46 kw
459
A substance that decreases the effect of friction and which is
commonly obtained from petroleum products.
a. lubricant
b. gear oil
c. grease
d. all of the above
all of the above
460
Gear oil is used for
a. engine
b. transmission box
c. hydraulic system
d. all of the above
transmission box
461
Mean effective pressure for turbo-charge engine.
a. 300 psi
b. 200 psi
c. 400 psi
d. none of the above
300 psi
462
Engine valve that allows the entrance of fuel.
a. exhaust valve
b. intake valve
c. check valve
d. none of the above
intake valve
463
If the compression ratio is 1:17, the piston displacement volume
for 10 cm3 piston clearance volume is
a. 160 cc
b. 170 cc
c. 200 cc
d. none of the above
160 cc
464
Standard throttling adjustment of an engine.
a. 1/3
b. 1⁄2
c. 3⁄4
d. none of the above
3⁄4
465
Mean effective pressure of an engine.
a. 120 psi
b. 200 psi
c. 50 psi
d. none of the above
120 psi
466
Number of pistons for 6 cylinder four stroke gasoline engine.
a. 3
b. 6
c. 9
d. none of the above
6
467
Fuel for compression ignition engine.
a. gasoline
b. kerosene
c. LPG
d. none of the above
none of the above
468
A term used to describe the resistance of oil to flow.
a. viscosity
b. cetane number
c. volume weight
d. none of the above
viscosity
469
The speed of the engine is automatically regulated by.
a. hand lever
b. governor
c. flywheel
d. none of the above
governor
470
Ignition timing for gasoline engine.
a. 1-5 deg.
b. 5-10 deg.
c. 10-15 deg.
d. none of the above
5-10 deg.
471
Ignition timing for diesel engine.
a. 5-12 deg.
b. 17-19 deg
c. 20-26 deg
d. none of the above
17-19 deg
472
A type of engine that completes power stroke in two revolution of
the crankshaft.
a. four-stroke cycle engine
b. two-stroke cycle engine
c. all of the above
d. none of the above
four-stroke cycle engine
473
A type of engine that completes power stroke in one revolution of
the crankshaft.
a. four-stroke cycle
b. two-stroke cycle
c. all of the above
d. none of the above
two-stroke cycle
474
An engine that produce more power per unit weight.
a. four-stroke cycle
b. two-stroke cycle
c. all of the above
d. none of the above
Two-stroke cycle
475
An engine which uses oil entirely as lubricant.
a. four-stroke cycle
b. two-stroke cycle
c. all of the above
d. none of the above
four-stroke cycle
476
One horsepower can generate heat energy equal to
a. 2455 BTU/hr
b. 2545 BTU/hr
c. 2445 BTU/hr
d. none of the above
2545 BTU/hr
477
An engine basically has
a. larger cylinder diameter that piston diameter
b. larger piston diameter than cylinder diameter
c. equal piston diameter than cylinder diameter
d. none of the above
larger cylinder diameter that piston diameter
478
A part of an engine which reduces vibration and stores energy.
a. spark plug
b. flywheel
c. piston
d. none of the above
flywheel
479
If a 4-cylinder, 2-stroke-cycle internal-combustion engine has 600
explosion per minute, what is the engine rpm.
a. 125 rpm
b. 150 rpm
c. 200 rpm
d. none of the above
150 rpm
480
Considering that the engine in Item above has a piston diameter
of 4” and piston stroke of 5”, what is the indicated horsepower of
the engine assuming a mean effective pressure of 102 psi.
a. 9.7 hp
b. 53.3 hp
c. 28.5 hp
d. none of the above
9.7 hp
481
What is the brake horsepower of the engine in Item above if the
mechanical efficiency is 80 percent.
a. 8 hp
b. 31 hp
c. 35 hp
d. none of the above
8 hp
482
The indicated power of an engine is 69 horsepower. The brake
horsepower is 54. What is the mechanical or engine efficiency.
a. 69 %
b. 78 %
c. 59%
d. none of the above
78 %
483
What is the thermal efficiency of an engine which uses 0.6-lb of
fuel per horsepower-hr. The fuel contain 20,000 BTU/lb.
a. 21.2 %
b. 34.5 %
c. 46.8 %
d. none of the above
21.2 %
484
The brake constant is
a. 2 pi R/c
b. 2 pi RN
c. 2 pi RFN/c
d. none of the above
2 pi R/c
485
What is the brake constant value of a dynamometer whose length
of arm is equal to 1m?
a. 0.082 sec/kg
b. 0.82 sec/kg
c. 2.8 sec/kg
d. none of the above
0.82 sec/kg
486
A diesel engine four-stroke cycle with three cylinder has a
cylinder bore of 89 mm and a stroke of 130 mm. The compression
ratio is 16:1 and running at a speed of 2000 rpm. What is the
piston displacement of the engine per cylinder?
a. 809 cc
b. 1320 cc
c. 650 cc
d. none of the above
809 cc
487
What is the total power stroke per minute of the piston in item
above?
a. 2000
b. 3000
c. 500
d. none of the above
3000
488
In item above, what is the total displacement volume per min. of
the engine?
a. 9708 lpm
b. 8534 lpm
c. 9578 lpm
d. none of the above
9708 lpm
489
In item above, what is the piston speed of the engine?
a. 520 m/min
b. 3672.76 m/min
c. 3725.23 m/min
d. none of the above
520 m/min
490
In item above, what is the stroke-to-bore ratio of the engine.
a. 1.00
b. 1.32
c. 1.46
d. none of the above
1.46
491
A four-cylinder gasoline engine has a cylinder diameter of 20 cm
and a stroke of 40 cm. The cylinders run at a speed of 150 rpm.
The engine is a four-stroke cycle with a mean effective pressure of
8 kg/cm2. What is the area of the piston?
a. 314 cm2
b. 284 cm2
c. 167 cm2
d. none of the above
314 cm2
492
What is the length of stroke of the engine piston in meter in item
above?
a. 0.40
b. 0.20
c. 0.8
d. none of the above
0.40
493
What is the power stroke of the engine per cylinder in item above?
a. 50
b. 75
c. 100
d. none of the above
75
494
What is the total power stroke of the engine in item above?
a. 150
b. 300
c. 75
d. none of the above
300
495
What is the indicated horsepower of the engine?
a. 46 hp
b. 66 hp
c. 56 hp
d. none f the above
66 hp
496
If the engine mechanical efficiency, in item above, is 80 %, what
is the brake horsepower of the engine?
a. 53 hp
b. 35 hp
c. 65 hp
d. none of the above
53 hp
497
What is the stroke-to-bore ratio of the engine in item above?
a. 2.0
b. 1.6
c. 2.4
d. none of the above
2.0
498
If a two-stroke 4-cylinder engine is running at 2000 rpm, the
power stroke per minute of the engine is
a. 4000
b. 8000
c. 2000
d. none of the above
8000
499
Power available on human for useful work.
a. 0.1 hp
b. 0.5 hp
c. 0.3 hp
d. none of the above
0.1 hp
500
Domesticated animals used as power for agriculture.
a. dairy animals
b. draft animals
c. game animals
d. none of the above
draft animals
501
A person is doing a work for 4 hours, what is the power developed
by the person?
a. 0.09 hp
b. 0.13 hp
c. 0.15 hp
d. none of the above
0.13 hp
502
Conversion of solid fuel into combustible carbon monoxide
through thermochemical reaction.
a. digestion
b. carbonization
c. gasification
d. pyrolysis
gasification
503
Power generated from moving air.
a. wind power
b. hydropower
c. photovoltaic cell
d. none of the above
wind power
504
A gas that produces putrefactive bacteria that breaks down organic
material under airless condition consisting mainly of methane and
carbon dioxide.
a. biofuel
b. biogas
c. gasifier
d. LPG
biogas
505
Wind is moving at 4 meters per second. If the rotor area is 2
square meters, what is the wind power?
a. 80 watts
b. 125 watts
c. 95 watts
d. none of the above
80 watts
506
Average power density of solar heat striking the earth surface.
a. 1 kw/m2
b. 0.89 kw/m2
c. 0.58 kw/m2
d. none of the above
0.89 kw/m2
507
One hundred liters per second of water is falling at a head of 10
meters. The turbine efficiency is 80 %. What is the hydraulic
power of the hydro system.
a. 8.7 kw
b. 87 kw
c. 7.8 kw
d. none of the above
7.8 kw
508
A device that converts kinetic energy of the wind to mechanical
power.
a. rotor
b. generator
c. motor
d. none of the above
rotor
509
A device that converts electricity to mechanical power.
a. rotor
b. generator
c. motor
d. none of the above
motor
510
A device that generates electricity from sunlight.
a. windpump
b. photovoltaic
c. generator
d. none of the above
photovoltaic
511
Wind machine that is used for lifting water
a. aerogenerator
b. wind turbine
c. windpump
d. none of the above
windpump
512
Power generated from a falling water.
a. hydro power
b. biomass power
c. wind power
d. none of the above
hydro power
513
Vehicle designed to pull, propel, and supply power to operate
machinery used in agricultural operation.
a. agricultural tractor
b. automobile
c. payloader
d. none of the above
agricultural tractor
514
The stirring wheel of the tractor can be found at
a. in front of the tractor
b. at the rear of the tractor
c. in front of the operator’s seat
d. none of the above
in front of the operator’s seat
515
A substance that is added to the tractor for the purpose of
changing traction and stability.
a. ballast
b. cage wheel
c. plow
d. hydraulic lift
ballast
516
Power drive that can be found at the rear of the tractor to propel
power implements and stationary machines.
a. power take off drive
b. hydraulic system
c. differential gear
d. none of the above
power take off drive
517
Standard rpm of a tractor PTO drive.
a. 600 rpm
b. 200 rpm
c. 540 rpm
d. none of the above
540 rpm
518
Standard number of splines on a PTO drive.
a. 10
b. 21
c. 15
d. none of the above
21
519
A two-wheeled and hand-operated tractor used primarily as a
substitute for draft animals.
a. power tiller
b. reaper
c. seeder
d. none of the above
power tiller
520
Attachment to a tractor rear wheel to increase traction.
a. ballast
b. cagewheel
c. stirring wheel
d. none of the above
cagewheel
521
Tractor part that controls the direction of the travel of the
machine.
a. rear wheel
b. front wheel
c. stirring wheel
d. none of the above
stirring wheel
522
A tractor device which automatically raises or lowers the
implement in operation to maintain a given draft.
a. automatic draft control
b. automatic position control
c. 3-point linkage
d. none of the above
automatic position control
523
The inherent characteristics of tractors to maintain or to produce
increased drawbar pull even if the speed is reduced.
a. lugging ability
b. mechanical efficiency
c. coefficient of traction
d. none of the above
lugging ability
524
The lower PTO speed of standard four-wheel tractor is.
a. 540 rpm
b. 450 rpm
c. 640 rpm
d. none of the above
540 rpm
525
It is the special arrangement of gears to permit driving member to
rotate slower or faster than the other and permit operation of
driving wheels at different speed for easy turn.
a. spur gear
b. planetary gear
c. differential
d. none of the above
differential
526
It is a gear reduction of the tractor located in the power train
between the differential and the driving wheel and transmits
power of low speed and large tongue to the rear axles and wheels.
a. differential
b. universal joint
c. final dive
d. none of the above
final dive
527
Standard power-take-off speed of a tractor.
a. 100 rpm
b. 540 rpm
c. 1200 rpm
d. none of the above
540 rpm
528
Standard number of spline for PTO shaft.
a. 6 spline
b. 21 spline
c. 20 spline
d. All of the above
All of the above
529
Standard shaft diameter of PTO shaft.
a. 35 mm
b. 40 mm
c. 50 mm
d. none of the above
35 mm
530
If farm tractor is rated at 80 horsepower, its metric equivalent is
a. 75 kw
b. 60 kw
c. 80 kw
d. none of the above
60 kw
531
The heat energy content of coconut shell charcoal is 14223
BTU/lb. How many kilo calories are there in 10 kilos of coconut
shell charcoal.
a. 78, 852.3 Kcal
b. 68, 852.3 Kcal
c. 87, 852.3 Kcal
d. none of the above
78, 852.3 Kcal
532
The burning efficiency of rice hull furnaces is between
a. 70-80 %
b. between 80-90 %
c. 90 and less than 100 %
d. none of the above
between 80-90 %
533
The thermal efficiency of rice hull furnaces is between.
a. 40-70 %
b. 70-90 %
c. 10-40 %
d. all of the above
40-70 %
534
A corn cob has an stoichiometric air requirement of 5.7 kg air/kg
fuel. If 3 kg of corn cob is required to be burned per hour, how
much air in m3/hr is required for the system.
a. 3.68 m3/hr
b. 31.68 m3/hr
c. 13.68 m3/hr
d. none of the above
13.68 m3/hr
535
It is an indicator of the amount of fuel in a furnace that is
converted into ash.
a. burning efficiency
b. thermal efficiency
c. heat utilization efficiency
d. none of the above
burning efficiency
536
It indicates the ratio of the amount of heat given off by the furnace
to the system and the heat used from the fuel.
a. burning efficiency
b. thermal efficiency
c. heat utilization energy
d. none of the above
thermal efficiency
537
Which of the following is true in operating gasifier for internal
combustion engine?
a. Only 50 to 70 % of the diesel oil can be replaced by gas
producer.
b. Gasoline and diesel can be fueled with gas producer.
c. The power output of gasoline engine at arbitrary rpm will
decrease by 30 to 50% when fueled with producer gas.
d. All of the above
All of the above
538
A rice hull gasifier reactor that produces less tar during operation.
a. updraft
b. crossdraft
c. downdraft
d. all of the above
downdraft
539
The primary gas produced during gasification.
a. methane
b. carbon dioxide
c. carbon monoxide
d. all of the above
carbon monoxide
540
When a biogas contains 40 % methane and 60 % carbon dioxide,
a. the biogas can be used for cooking
b. the biogas can be used for lighting
c. the biogas can run a gas refrigerator
d. none of the above
none of the above
541
A biogas is generated inside the
a. gas holder
b. mixing tank
c. digester
d. none of the above
digester
542
The feed material to water ratio for biogas generation is
a. 1:0.5 to 1:1
b. 1:1 to 1:2
c. 1:2 to 1:3
d. none of the above
1:1 to 1:2
543
A digester for biogas is to be designed to accommodate 30 liters
of dung per day. If the feed-material-to-water ratio is 1:1 and the
designed retention time is 80 days, what is the capacity of the
digester.
a. 4800 liters
b. 5200 liters
c. 6100 liters
d. none of the above
4800 liters
544
A solid biomas fuel burning device used for domestic cooking,
water heating, smoking, roasting and simmering.
a. furnace
b. cookstove
c. biomass oven
d. none of the above
cookstove
545
The percentage primary air requirement based on the total air for
the combustion of fuel in a cookstove.
a. 80 %
b. 60 %
c. 40 %
d. none of the above
80 %
546
Elements necessary for combustion.
a. fire
b. air
c. fuel
d. all of the above
all of the above
547
Air required for complete combustion of combustible gases.
a. stoichiometric air
b. primary air
c. secondary air
d. all of the above
secondary air
548
The amount of heat required to raise the temperature of one pound
water by one degree farenheight.
a. kcal
b. BTU
c. joule
d. none of the above
BTU
549
The excessive amount of tars produced in the combustion of
agricultural waste is primarily due to:
a. insufficiency of fuel
b. less air is used
c. too much air is used
d. none of the above
less air is used
550
During gasification of biomass fuel, the primary gas produced is
___.
a. Carbon dioxide
b. Carbon dioxide
c. Methane and carbon dioxide
d. All of the above
Carbon dioxide
551
Open-fire stove has a thermal efficiency of:
a. 3-11%
b. 11-20%
c. 20-30%
d. all of the above
3-11%
552
A chamber where combustion of fuel takes place.
a. damper
b. chimney
c. fire box
d. none of the above
fire box
553
The thermal efficiency of a cookstove can be increased by:
a. increasing the amount of fuel
b. using more air for the fuel
c. insulating the stove
d. all of the above
insulating the stove
554
The power output of an agriwaste-fired multiple-burner stove can
be increased by
a. providing large connecting tunnel for the pot holes
b. providing damper to control the flow of passage of air
c. increasing the height of the chimney
d. none of the above
providing large connecting tunnel for the pot holes
555
The recommended angle for the inclined metal grates on the step-
grate-type stove.
a. 45-60 deg
b. 30-40 deg
c. 60-80 deg
d. none of the above
45-60 deg
556
A gas produced from agricultural waste which is odorless,
tasteless, colorless and flammable.
a. biogas
b. CO
c. CH4
d. None of the above
CO
557
The primary gas produced during anaerobic digestion of
agricultural wastes.
a. CH4 & H2S
b. CH4 & CO2
c. CH4 & CO
d. All of the above
CH4 & CO2
558
C-N ratio suitable for anaerobic digestion of agriwaste.
a. 10:1 to 20:1
b. 20:1 to 30:1
c. 30:1 to 40:1
d. none of the above
20:1 to 30:1
559
The power output of diesel engine, when powered with gas
producer at an arbitrary speed, will be reduced by
a. 10-20 %
b. 30-50 %
c. 50-70 %
d. none of the above
10-20 %
560
The percentage amount of diesel fuel can be replaced by gas
producer
a. 20-40 %
b. 50-70 %
c. 90-100 %
d. none of the above
50-70 %
561
Type of engine that can be fueled with producer gas.
a. gas engine
b. diesel engine
c. gasoline engine
d. all of the above
all of the above
562
The bulk density of rice husk.
a. 50-80 kg/m3
b. 100-120 kg/m3
c. 140-160 kg/m3
d. none of the above
100-120 kg/m3
563
To minimize channel formation inside the gasifier reactor, the
superficial gas
velocity on the bed of the char should not exceed
a. 8-9 cm/sec
b. 15-20 cm/sec
c. 20-23 cm/sec
d. none of the above
20-23 cm/sec
564
The air requirement for gasification of agricultural waste ranged
from
a. 10-20 % of stoichiometric air (SA)
b. 20-30 % of SA
c. 30-40 % of SA
d. none of the above
30-40 % of SA
565
A cleaning units for rice husk gasifier to remove gaseous pollutant
and solid particles while cooling the gas at the same time.
a. cyclone separator
b. fabric filter
c. scrubber
d. none of the above
scrubber
566
A type of gas producer which has the ability to gasify wet fuel
a. updraft
b. down draft
c. cross draft
d. fluidized bed
updraft
567
A cleaning system is needed for gasifier when the unit is to be
used for
a. direct heating
b. power generation
c. gas production
d. none of the above
power generation
568
The gasification rate of rice hull ranged from
a. 90-105 kg/m2-hr
b. 110-120kg/m2-hr
c. 125-140 kg/m2-hr
d. none of the above
110-120kg/m2-hr
569
Rice hull gasifier efficiency normally ranged from
a. 50-70 %
b. 70-80 %
c. 80-90 %
d. none of the above
50-70 %
570
The caloric value of fuel is
a. the amount of heat contained by the fuel per unit weight
b. the weight of fuel to be heated
c. the heat needed to burn a certain weight of fuel
d. none of the above
the amount of heat contained by the fuel per unit weight
571
A type of rice husk furnace that burn the fuel while it is being
spread in a circular
pattern inside the combustion chamber.
a. step grate furnace
b. suspended air furnace
c. cyclone furnace
d. all of the above
cyclone furnace
572
The thermal efficiency of the furnace is the ratio of
a. the amount of fuel used to the amount of heat generated during
combustion
b. the amount of heat generated during combustion to the amount
of fuel used
c. the amount of heat delivered to the amount of heat available in
the fuel used
d. none of the above
the amount of heat delivered to the amount of heat available in
the fuel used
573
The burning temperature of most agricultural waste.
a. 100-200C
b. 300-400C
c. 500-600C
d. none of the above
300-400C
574
A high-cetane fueled engine uses
a. diesel as fuel and is difficult start engine at lower temperature
b. diesel as fuel and is easy to start at lower temperature
c. gasoline fuel and is easy to start at lower temperature
d. none of the above
diesel as fuel and is easy to start at lower temperature
575
High viscosity engine oil is desirable to use because
a. its viscosity changes easily with a change in temperature
b. its viscosity does not change easily with a change in
temperature
c. its viscosity changes even without a change in temperature
d. none of the above
its viscosity does not change easily with a change in
temperature
576
Engine oil having high flash and fire point indicates.
a. high boiling point
b. high vaporation rate
c. high heating value
d. all of the above
high boiling point
577
In order to increase the resistance of engine oil, the formation of
certain acidic product that may cause corrosion of certain type of
bearing the recommended additive to use is.
a. anticorrosive
b. antioxidants
c. dispersants
d. all of the above
antioxidants
578
An additive purposely to provide a protective film on bearing
surfaces thus preventing any acid to corrode metal parts.
a. anticorrosive
b. antioxidants
c. dispersants
d. all of the above
anticorrosive
579
Additives to cause carbon particles in the engine to remain in
suspension in oil.
a. anticorrosive
b. antioxidants
c. dispersants
d. all of the above
dispersants
580
The burning of portion of fuel in the combustion chamber of an
engine at a rate faster than the desired.
a. knocking
b. detonation
c. misfiring
d. all of the above
detonation
581
A device used to measure the quantity of oil in a crankcase.
a. dipstick
b. oil gauge
c. oil stick
d. none of the above
dipstick
582
A device that provides a rich mixture of fuel during high load and
lean mixture during under load.
a. carburetor
b. economizer
c. fuel regulator
d. all of the above
economizer
583
The lubrication system of an engine is basically
a. to reduce wear and tear of an engine
b. to act seal between the piston and cylinder wall
c. to act as complement of the cooling system
d. all of the above
all of the above
584
When a diesel engine knocks, the trouble is.
a. the diesel fuel ignition timing is late
b. incorrect engine lubrication and wrong grade of oil
c. incorrect type of spark plug
d. all of the above
the diesel fuel ignition timing is late
585
When a gasoline engine knocks, the problem is.
a. the spark timing is too far advance
b. incorrect type of fuel
c. incorrect type of spark plug
d. all of the above
all of the above
586
If the engine timing is advance
a. the spark plug ignites earlier than the fuel while the piston is
completing the compression stroke
b. the spark plug ignites earlier than the fuel while the piston is at
the intake stroke
c. the spark plug ignites earlier than the fuel while moving
downward immediately after the power stroke
d. all of the above
the spark plug ignites earlier than the fuel while the piston is
completing the compression stroke
587
It is the act of checking, testing measuring, repairing and adjusting
the engine in order to bring it to peak efficiency.
a. trouble shooting
b. tune-up
c. timing adjustment
d. all of the above
tune-up
588
The coefficient of traction for wheel-type tractor is highest for
a. concrete road
b. fine sand
c. sandy loam soil
d. all of the above
concrete road
589
The rapid explosion of mixture of fuel and air within the cylinder
when ignited by spark plug is.
a. constant volume combustion
b. constant pressure combustion
c. constant temperature combustion
d. all of the above
constant volume combustion
590
The relatively slow burning as the fuel is injected into a highly
compressed heated air is.
a. constant volume combustion
b. constant pressure combustion
c. constant temperature combustion
d. all of the above
constant pressure combustion
591
The gross heating value of diesel is
a. higher than gasoline
b. higher than kerosene
c. higher than ethanol
d. all of the above
higher than ethanol
592
The specific gravity of gasoile is at the range of ______
a. 0.67 to 0.76
b. 0.79 to 0.85
c. 0.85 to 0.91
d. all of the above
0.67 to 0.76
593
An injection system used in small stationary diesel engine
consisting essentially of a high pressure pump and an injection
nozzle.
a. air injection system
b. solid injection system
c. automized injection system
d. none of the above
solid injection system
594
Thermal efficiency of internal combustion engine.
a. 0 to 10 %
b. 10 to 20 %
c. 20 to 30 %
d. none of the above
20 to 30 %
595
An engine running at a speed of 2000 rpm is classified as
a. low speed engine
b. medium speed engine
c. high speed engine
d. none of the above
high speed engine
596
It is used to seal engine components which are bolted to the
subframe, the cylinder block, and the crankcase.
a. oil
b. grease
c. gasket
d. none of the above
gasket
597
An air cooled engine is basically equipped with
a. pump
b. fan
c. fan and pump
d. none of the above
fan
598
A quality type of spark plug for gasoilen engine.
a. magnesium-type
b. platinum type
c. carbon type
d. none of the above
platinum type
599
New model of engines with 16 valves has _____ cylinders.
a. 16
b. 8
c. 4
d. None of the above
4
600
When an engine is diesel operated,
a. the mixture of air and fuel is taken in the cylinder
b. the fuel is compressed into the combustion engine
c. air fuel ratio is not constant as the quantity of air drawn into
the cylinder is not always the same
d. all of the above
air fuel ratio is not constant as the quantity of air drawn into
the cylinder is not always the same
601
When operating light equipment, it is recommended to use.
a. four stroke gasoline engine
b. two stroke gasoline engine
c. four stroke diesel engine
d. all of the above
two stroke gasoline engine
602
A four-stroke-cycle engine is advantageous to use than two-
stroke-cycle engine for the reason that
a. it is easier to start the engine
b. easy to lubricate
c. has regular intake and exhaust valves
d. all of the above
all of the above
603
A turbine used for hydro system wherein pressurized water is
converted into a high speed jet by passing it through a nozzle.
a. impulse turbine
b. reaction turbine
c. water wheel
d. none of the above
impulse turbine
604
A turbine for hydro system which runs completely filled with
water.
a. impulse turbine
b. reaction turbine
c. water wheel
d. none of the above
reaction turbine
605
A component part of solar electric system that converts sunlight to
electricity
a. PV panel
b. solar cell
c. solar module
d. all of the above
all of the above
606
Solar battery is rated in terms of
a. dimension of the battery
b. wattage
c. ampere – hour
d. none of the above
ampere – hour
607
The capacity required for a 12-volt solar panel system is 73.6
watt-hour. What is the ampere-hour capacity of the battery needed
for the system?
a. 6.13 ampere-hour
b. 4.05 ampere-hour
c. 7.23 ampere-hour
d. none of the above
6.13 ampere-hour
608
The act of analyzing, testing, and measuring the engine to remedy
the cause and trouble.
a. servicing
b. tune-up
c. trouble shooting
d. all of the above
trouble shooting
609
When strength is provided beyond what is needed as an extra
margin of insurance against parts failure.
a. factor of ignorance
b. factor of safety
c. reliability
d. none of the above
factor of safety
610
An engine running without load is in.
a. optimum running condition
b. low running condition
c. idle condition
d. none of the above
idle condition
611
Japanese engines are usually rated in trems of _____
a. Horsepower
b. kW
c. PS
d. None of the above
PS
612
Two engines are rated 1 hp and the other is 1 ps. Which of the
following statement is true.
a. 1 hp engine is stronger than 1 ps engine
b. 1 ps engine is stronger than 1 hp engine
c. two engines are the same in strength
d. none of the above statement is true
1 ps engine is stronger than 1 hp engine
613
Japanese engines are usually rated in terms of
a. horsepower
b. pferde starke
c. watts
d. all of the above
pferde starke
614
If the rotor of the windmill originally at 2 meters is to be reduced
to 1 meter, the power output of the machine will be reduced by
a. two times
b. three times
c. four times
d. none of the above
four times
615
Wind flows on a 2-m diameter rotor at a rate of 2 m/s. Suddenly,
the wind flows at 4 m/s, what would be the power output of the
windmill?
a. 4 times
b. 6 times
c. 8 times
d. none of the above
8 times
616
Small gasoline engine basically has a compression ratio of
a. 6:1
b. 10:1
c. 3:1
d. none of the above
6:1
617
A gasoline without ethylene bromide or having an octane rating of
87 which sometimes caused knocking on the engine.
a. premium
b. leaded
c. unleaded
d. all of the above
unleaded
618
It is a device used to generate high voltage current needed for
spark plug in small engine.
a. distributor
b. contact point
c. magneto
d. all of the above
magneto
619
A knocking sound produced due to incomplete combustion of fuel
inside the combustion chamber of an engine.
a. detonation
b. ignition
c. carburetion
d. none of the above
detonation
620
Part of a tractor that retards or stops one wheel during operation to
be able to make short turn.
a. differential brake
b. hand brake
c. brake pedal
d. all of the above
differential brake
621
Part of the tractor engine where pistons slide back and fort and are
replaced or rebored when damaged.
a. cylinder block
b. cylinder liner
c. cylinder head
d. all of the above
cylinder liner
622
A turbine and an air blower mounted ahead of the intake manifold
of an engine to force more air into the cylinder thereby increasing
power output of the engine by 10-15 %.
a. auxiliary air reducer
b. turbocharger
c. power inducer
d. all of the above
turbocharger
623
A device that converts energy of animal to useful work.
a. head yoke
b. breast strap
c. harness
d. none of the above
harness
624
If two animals having 0.75 hp each are harnessed together, the
pulling output of the two animals is
a. greater than 1.5 hp
b. equal to 1.5 hp
c. less than 1.5 hp
d. none of the above
less than 1.5 hp
625
It is the utilization of hand tools, implements for draft animals,
and mechanically-powered machines for agricultural land
development, production, harvesting and on-farm processing.
a. agricultural development
b. agricultural machinery and equipment
c. agricultural mechanization
d. all of the above
agricultural mechanization
626
What is the approximate pull of a carabao whose weight is 1000
kilogram?
a. 100 kg
b. 150 kg
c. 200 kg
d. none of the above
100 kg
627
One pferde starke (ps) is equal to
a. 0.986 hp
b. 0.735 kw
c. 75 kgf-m/sec
d. all of the above
all of the above
628
A rice husk stove boils 2 liters of water and subsequently
evaporated 0.5 liter. The initial temperature of water is 27C. The
amount of fuel consumed in boiling and evaporating water is 1.5
kg. What is the thermal efficiency of the stove? Assume a heat of
vaporization of water equal to 540 kCal/kg and heating value of
fuel equal to 3,000 kCal per kg.
a. 5.2 %
b. 9.2 %
c. 12.5 %
d. none of the above
9.2 %
629
When you want to diagnose ignition and other electrical problems
of an engine, a typical instrument to be used is ______.
a. Compression tester
b. Oscilloscope
c. Dynamometer
d. None of the above
Oscilloscope
630
It is a device used to measure the state of the battery charge of an
engine.
a. Tachometer
b. Hydrometer
c. Ohmmeter
d. None of the above
Hydrometer
631
Engine power performance is measured using _______.
a. Compression tester
b. Oscilloscope
c. Dynamometer
d. None of the above
Dynamometer
632
It is a measure of the area in cubic inches above the piston when it
is at the top of its stroke, compared to the area above the piston
when it is at the bottom stroke.
a. Piton Displacement
b. Compression Ratio
c. Clearance volume
d. None of the above
Compression Ratio
633
Gasoline engine power output can be increased by
a. Increasing the compression ratio
b. Increasing the fuel feeding
c. Reducing the load of the engine
d. None of the above
Increasing the compression ratio
634
A small mechanical blower installed in an engine to increase
power output by forcing fuel charge under pressure into the
cylinder.
a. Supercharger
b. Soot blower
c. High pressure blower
d. None of the above
Supercharger
635
Air-fuel ratio for combustion for gasoline engine.
a. 10 to 1
b. 15 to 1
c. 20 to 1
d. All of the above
15 to 1
636
The compression ratio of an engine can be increased by
a. Installing connecting rod of greater length
b. Installing high-dome piston
c. Installing crankshaft which has a crank pin throw of greater
length
d. All of the above
All of the above
637
A switching device of high voltage current in multiple cylinder
engine which breaks primary and secondary circuits.
a. Distributor
b. Contact point
c. Relay
d. None of the above
Distributor
638
Premature explosion in the cylinder of a gasoline engine during
the exhaust stroke.
a. Backlash
b. Backfire
c. Back pressure
d. All of the above
Backfire
639
It is the setting of the distributor to give high voltage current to
the spark plug in relation to the movement and position of the
piston.
a. Idling
b. Ignition timing
c. Engine timing
d. None of the above
Ignition timing
640
It refers to any ring or washer providing a packing or seal between
metal surfaces of engine.
a. Oil ring
b. Grease
c. Gasket
d. None of the above
Gasket
641
Ignition or combustion of fuel not at the proper time.
a. Backfiring
b. Misfiring
c. Detonation
d. None of the above
Misfiring
642
A condition whereby the engine on its operation has abnormally
increased its temperature due to faulty cooling, lubricating, and
other mechanical trouble.
a. Backfiring
b. Overheating
c. Misfiring
d. None of the above
Overheating
643
Air fuel ratio of an engine under idling condition.
a. 11.0-12.5 to 1
b. 12.5-13.5 to 1
c. 13.5-17.0 to 1
d. None of the above
11.0-12.5 to 1
644
Abnormal rapid combustion occurring simultaneously with
normal combustion manifested by loss of power, overheating,
rough operation, and sharp ringing sound called engine knock.
a. Backfiring
b. Misfiring
c. Detonation
d. None of the above
Detonation
645
Air fuel ratio of an engine at full load
a. 11.0-12.5 to 1
b. 12.5-13.5 to 1
c. 13.5-17.0 to 1
d. None of the above
12.5-13.5 to 1
646
Recommended engine spark plug gap clearance.
a. 0.02 in and below
b. 0.02 to 0.04 in
c. 0.04 in to 0.06 in
d. None of the above
0.02 in and below
647
General rule for piston to cylinder wall clearance.
a. 0.001 in. for every inch diameter of the piston
b. 0.002 in. for every inch diameter of the piston
c. 0.003 in. for every inch diameter of the piston
0.001 in. for every inch diameter of the piston
648
Recommended gap or clearance of the contact point of engine.
a. 0.010 to 0.020 in.
b. 0.020 to 0.035 in.
c. 0.035 to 0.045 in.
d. none of the above
0.010 to 0.020 in.
649
The temperature to which an oil must be heated in order to ignite
and burn.
a. Ignition temperature
b. Flash point
c. Oil index point
d. None of the above
Flash point
650
Resurfacing or replacing of cylinder head is done when ______of
its full length is warped.
a. 0.010 to 0.015 in.
b. 0.015 to 0.020 in.
c. 0.020 in. and above
d. All of the above
0.020 in. and above
651
A loud sound emanating from an engine generally due to looses or
worn parts, pre-ignition, or detonation.
a. Backfire
b. Misfire
c. Knock
d. All f the above
knock
652
A device that deaden the noise of escaping gases or vapors
emanating from an internal combustion engine.
a. Flywheel
b. Valves
c. Muffler
d. None of the above
Muffler
653
A trouble in the clutch characterized by abrupt transmission of
engine power resulting in a jerking motion when the clutch is
engaged.
a. Grabbing
b. Shearing
c. Knock
d. None of the above
Grabbing
654
Flushing water in the radiator is being done __________
a. every month
b. every 3 months or 10,000 km
c. every 6 months or 24,000 km
d. all of the above
every 3 months or 10,000 km
655
Term used to indicate leakage or loss of pressure as leakage of
compression between piston and cylinder in a gasoline engine.
a. Blow-by
b. Head loss
c. Back pressure
d. None of the above
Blow-by
656
Changing of transmission oil should be done _____
a. Every 3 months or 10,000 km
b. every 6 months or 24,000 km
c. every year or 48,000 km
d. All of the above
every 6 months or 24,000 km
657
Component part of an axial flow rice thresher that cause the
movement of the rice straw from one end to the other end during
threshing operation.
a. Concave
b. Louvers
c. Pegteeth
d. None of the above
Louvers
658
Ribbed Type v-belt where ribs as positioned across the belt length.
a. V-ribbed belt
b. Cogged belt
c. Timing belt
d. None of the above
Cogged belt
659
Component part of rice thresher which separates straw from the
grain during threshing operation.
a. Louvers
b. Concave
c. Screen
d. None of the above
Concave
660
Threshing efficiency basically is determined from weight of grain
obtained at the ________ to the grain input fed at the feeding
trays.
a. straw outlet
b. oscillating screen outlet
c. blower outlet
d. All of the above
straw outlet
661
A trailing type implement is hitch to the tractor at the ________
a. single hitch point system of the tractor
b. three-point hitch system of the tractor
c. power take off drive system of the tractor
d. none of the above
single hitch point system of the tractor
662
The PTO drive of a tractor is used to power _______
a. moldboard plow
b. chisel plow
c. rotary plow
d. All of the above
rotary plow
663
PAES 101:2000 refers to
a. General safety in agricultural machinery
b. Operator’s manual content and presentation
c. Method of sampling
d. All of the above
General safety in agricultural machinery
664
Test carried out on each and every component part or equipment
to check the specifications which are likely to vary during
production
a. Acceptance test
b. Routine test
c. Inspection
d. None of the above
Routine test
665
Basically hitches are provided for _________
a. self propelled machines
b. machines that are not self propelled
c. heavy machines
d. none of the above
machines that are not self propelled
666
Type of pump that combines the features of a centrifugal and axial
flow pump
a. submersible pump
b. mixed flow pump
c. reciprocating pump
d. all of the above
mixed flow pump
667
Recommended test material for testing rice thresher should have a
straw length of ______.
a. 30 to 45 cm
b. 45 to 50 cm
c. 50 to 65 cm
d. None of the above
45 to 50 cm
668
Grain-straw ratio requirement for testing rice thresher ranged from
______
a. 0.35 to 0.50
b. 0.50 to 0.65
c. 0.65 to 0.80
d. all of the above
0.50 to 0.65
669
During the test of agricultural machine, the shaft speed is
measured using _______.
a. Speedometer
b. velocity meter
c. tachometer
d. none of the above
tachometer
670
Pressure drop of air moving devices is usually measured by
______
a. pressure gauge
b. pitot tube
c. manometer
d. none of the above
manometer
671
ACME engines are made from _________
a. Japan
b. Italy
c. USA
d. None of the above
Italy
672
Robin Engines are made from _______
a. USA
b. Japan
c. Switzerland
d. All of the above
Japan
673
Kohler engines are made from _____
a. USA
b. Italy
c. Switzerland
d. None of the above
USA
674
MAG engines are made from ______
a. USA
b. China
c. Switzerland
d. None of the above
Switzerland
675
Engines made from USA
a. Briggs and Straton engine
b. Kohler engine
c. All of the above
d. None of the above
All of the above
676
Kubota engines are made from _______
a. China
b. Korea
c. Japan
d. All of the above
Japan
677
The cooling system for multiple cylinder engines are usually
_________
a. water cooled
b. air cooled
c. water cooled and air cooled
d. None of the above
water cooled and air cooled
678
Water is usually used in engines as ____________
a. medium for cooling the cylinder head and block.
b. supplementary fuel for combustion
c. lubricating material for bearings
d. All of the above
medium for cooling the cylinder head and block.
679
Which of the following engines are produced from Japan?
a. Honda
b. Kubota
c. Robin
d. All of the above
All of the above
680
A self-propelled machine having a single axle designed primarily
to pull and propel trailed or mounted agricultural implement and
machinery.
a. hand tractor
b. pedestrian tractor
c. walking type tractor
d. All of the above
All of the above
681
Minimum peak transmission efficiency for power tiller.
a. 75 percent
b. 85 percent
c. 95 percent
d. None of the above
85 percent
682
Minimum operating time required for testing power tiller without
breakdown and malfunction.
a. one hour
b. five hours
c. Eight hours
d. None of the above
five hours
683
Minimum permissible noise for power tiller.
a. 85 db
b. 92 db
c. 98 db
d. none of the above
92 db
684
Arrangement of valves wherein the intake and exhaust valves are
located in the cylinder head.
a. I-head arrangement
b. L-head arrangement
c. X-head arrangement
d. None of the above
I-head arrangement
685
Arrangement of valves wherein the intake and exhaust valves are
located on one side of the cylinder block.
a. I-head arrangement
b. L-head arrangement
c. X-head arrangement
d. None of the above
L-head arrangement
686
Basic hand tools need to be provided by manufacturers to buyers
of engines
a. open wrench
b. adjustable wrench
c. Philip and flat screw driver
d. spark plug wrench
e. All of the above
All of the above
687
Part of tractor to which implements are hitched
a. PTO drive
b. final drive
c. drawbar
d. none of the above
drawbar
688
Four wheel drive tractors are ________
a. tractors that have four running wheels
b. tractors that have four running wheels and driven the two rear
wheels by an engine
c. tractors that have four running wheels and all wheels are driven
by the engines
d. none of the above
tractors that have four running wheels and all wheels are driven
by the engines
689
It is the center to center distance between two front or rear wheels.
a. wheel tread
b. wheel base
c. wheel lugs
d. none of the above
wheel tread
690
Hydraulic control levers on typical four wheel tractors are located
at __________
a. front of the operator.
b. left side of the operator
c. right side of the operator
d. None of the above
right side of the operator
691
Which of the following types of drawbar are used for tractors?
a. fixed drawbar
b. swinging drawbar
c. link drawbar
d. all of the above
all of the above
692
A machine screw for general purpose use.
a. hexagonal head
b. hexagonal flange head
c. Pan head
d. None of the above
hexagonal head
693
Types of set screw for general purpose use.
a. Slotted head
b. Square head
c. hexagon socket head
d. None of the above
Square head
694
Type of screw thread used for rotating machine member such as
impeller shafts.
a. Right hand tread
b. Left hand thread
c. Square thread
d. None of the above
Left hand thread
695
Tool used to drive a cross recess screw.
a. Ordinary flat screw driver
b. Phillip screw driver
c. Allen wrench screw driver
d. all of the above
Phillip screw driver
696
Tool used to drive slotted machine screw.
a. Ordinary flat screw driver
b. Phillip screw driver
c. Allen wrench screw driver
d. all of the above
Ordinary flat screw driver
697
Type of screw thread used for almost all fastening application.
a. Right hand tread
b. Left hand thread
c. Square thread
d. None of the above
Right hand tread
698
Type of rivets used for fastening metal parts together when the
reverse joint is not accessible or its too restricted.
a. Cold forged rivet
b. Semi-tubular rivets
c. Blind rivet
d. None of the above
Blind rivet
699
A projecting parts of a gear that is in contact with the other gear
that cause the rotation in opposite direction.
a. Gear module
b. Gear tooth
c. Gear pitch circle
d. None of the above
Gear tooth
700
Required material designation for the construction of gear based
on PAES standard.
a. AISI designation 1021
b. AISI designation 1045
c. AISI designation 1080
d. None of the above
AISI designation 1045
701
PTO shaft profile for 35 mm nominal diameter shaft, 6 splines,
540 rpm rated speed
a. Involute spline
b. Straight spline
c. V-spline
d. None of the above
Straight spline
702
PTO shaft profile for 35 mm nominal diameter shaft, 21 splines,
1000 rpm rated speed
a. Involute spline
b. Straight spline
c. V-spline
d. None of the above
Involute spline
703
PTO shaft profile for 45 mm nominal diameter shaft, 20 splines,
1000 rpm rated speed
a. Involute spline
b. Straight spline
c. V-spline
d. None of the above
Involute spline
704
Brake systems for tractors
a. Internal expansion type
b. External expansion
c. Disc type
d. All of the above
e. None of the above
All of the above
705
Allowable wheel slip for maximum efficiency for two wheel
drive tractor on a firm soil
a. 7-11%
b. 10-15%
c. 16-20%
d. None of the above
7-11%
706
Allowable wheel slip for maximum efficiency for four wheel
drive tractor on a tilled and soft soil
a. 6 -10%
b. 8-13%
c. 7-11%
d. None of the above
8-13%
707
Roll on protection safety and seat belts are required for tractor
with ___________
a. 5 kW engine and above
b. 10 kW engine and above
c. 15 kW engine and above
d. None of the above
15 kW engine and above
708
It is the power measured at the flywheel or crankshaft of a four
wheel tractor
a. rated horsepower
b. indicated horsepower
c. engine horsepower
d. All of the above
engine horsepower
709
It is a distance between the supporting surface and the lowest
point of the tractor
a. Tractor height
b. Tractor ground clearance
c. Tractor overall height
d. None of the above
Tractor ground clearance
710
Speed in revolution per minute specified by the manufacturer
a. Rated horsepower
b. Engine speed
c. Rated engine speed
d. All of the above
Rated engine speed
711
Tractor weight is the total weight of the tractor including tools
with the fuel tank filled to _____ capacity and the normal amount
of cooling water and lubricating oil when the tractor is at work.
a. 60%
b. 80%
c. 100%
d. none of the above
80%
712
Type of row crop planter designed to deposit seed continuously in
straight column.
a. Drill planter
b. Hill-drop planter
c. Check-row planter
d. None of the above
Drill planter
713
Type of row-crop planter which enables operator to perform hill
planting at definite spacing to facilitates mechanical weed control
and other operations (Dh = Dr).
a. Drill planter
b. Hill-drop planter
c. Check-row planter
d. None of the above
Check-row planter
714
Type of row crop planter which is designed to deposit one or more
seeds in a hill at equal interval (Dh not equal to Dr)
a. Drill planter
b. Hill-drop planter
c. Check-row planter
d. None of the above
Hill-drop planter
715
Minimum efficiency required for tractor power driven row crop
planter
a. 40-50%
b. 55-60%
c. 65-70%
d. None of the above
55-60%
716
Minimum efficiency required for tractor power driven seed drill.
a. 55%
b. 65%
c. 75%
d. None of the above
65%
717
Minimum area required for testing manually operated seeder.
a. Not less than 100 m2
b. Not less than 500 m2
c Not less than 1000 m2
d. None of the above
Not less than 500 m2
718
Minimum area required for testing power operated seeder.
a. Not less than 100 m2
b. Not less than 500 m2
c Not less than 1000 m2
d. None of the above
Not less than 1000 m2
719
It is a flanged tube mounted on gang axle and placed between two
discs to prevent the lateral movement of the discs on the shaft.
a. Spool
b. Spacer
c. Tubular washer
d. None of the above
Spool
720
The traverse distance between the top or bottom edges of the end
disks of a plow .
a. Implement width
b. Width of cut
c. Disks width
d. None of the above
Disks width
721
Materials used in the manufacture of disc plow and disc blade for
harrows.
a. AISI 1020
b. AISI 1080
c. AISI 1045
d. None of the above
AISI 1080
722
Mild steel with 0.15 to 0.23 carbon content (cold rolled) is
designated by American Iron and Steel Institute as _______
a. AISI 1021
b. AISI 1080
c. AISI 1045
d. None of the above
AISI 1021
723
Carbon steel with at least 80% carbon is designated by American
Iron and Steel Institute as _______
a. AISI 1020
b. AISI 1080
c. AISI 1045
d. None of the above
AISI 1080
724
Type of bearing unit which is suitable for heavy radial load and
free from axial load.
a. Ball bearing
b. Tapered bearing
c. Cylindrical roller bearing
d. None of the above
Cylindrical roller bearing
725
Bearing with roller whose length is at least 4 times the diameter
suitable for heavy load, oscillating and low speed.
a. Cylindrical roller bearing
b. Needle bearing
c. Tapered roller bearing
d. None of the above
Needle bearing
726
Bearing suitable for both radial and thrust load.
a. Ball bearing
b. Cylindrical roller bearing
c. Needle bearing
d. None of the above
Ball bearing
727
Bearing that is excellent for heavy radial load and moderate thrust
load.
a. Tapered roller bearing
b. Spherical roller bearing
c. Ball bearing
d. None of the above
Spherical roller bearing
728
Which of the following statement is true?
a. Ball bearing operates at a higher speed limit than roller bearing
b. Roller bearing operates at a higher speed limit than ball bearing
c. Ball bearing operates at the same speed limit with roller
bearing
d. None of the above
Ball bearing operates at a higher speed limit than roller bearing
729
Gears used to transmit rotational motion and power between
parallel shafts.
a. Helical gear
b. Bevel gear
c. Worm gear
d. None of the above
Helical gear
730
Gears used to transmit rotational motion and power between
intersecting shaft.
a. Helical gear
b. Spur gear
c. Bevel gear
d. None of the above
Bevel gear
731
Protective device designed and fitted to prevent dangerous parts
being reached from the side.
a. Shield
b. Casing
c. Enclosure
d. None of the above
Shield
732
Protective device designed and fitted to prevent dangerous parts
being reached from all sides.
a. Shield
b. Casing
c. Enclosure
d. None of the above
Casing
733
Protective device which is usually made of rail, fence, or frame to
keep dangerous parts out of reach inadvertently.
a. Shield
b. Casing
c. Enclosure
d. None of the above
Enclosure
734
Peak of the furrow slice.
a. Furrow head
b. Furrow tip
c. Furrow crown
d. None of the above
Furrow crown
735
Cold rolled steel shaft with 0.37% to 0.44% carbon content is
designated by American Iron and Steel Institute as __________ .
a. AISI 1040
b. AISI 1020
c. AISI 1080
d. None of the above
AISI 1040
736
Minimum width required for hexagonal shaft of a walking type
tractor prime mover size of 4-6 to 14.5 hp diesel engine or 5 to 16
hp gasoline engine.
a. 25 mm
b. 32 mm
c. 45 mm
d. All of the above
32 mm
737
Minimum length of shaft required for walking-type tractor
irregardless of hp rating.
a. 500 mm
b. 750 mm
c. 1000 mm
d. All of the above
500 mm
738
Minimum size of chain for the transmission box of walking type
hand tractor.
a. ANSI chain number 40
b. ANSI chain number 50
c. ANSI chain number 60
d. All of the above
ANSI chain number 50
739
Pump that develops a vacuum sufficient enough for the
atmospheric pressure to force the liquid to flow through the
suction pipe without the need of feeding the pump with water.
a. Centrifugal pump
b. Vacuum pump
c. Self priming pump
d. None of the above
Self priming pump
740
Minimum volumetric efficiency requirement for Lever Operated
Knapsack Sprayer (LOKS).
a. 80%
b. 88%
c. 95%
d. None of the above
80%
741
Minimum capacity requirement for LOKS
a. 10 liters
b. 15 liters
c. 20 liters
d. None of the above
10 liters
742
Maximum weight required for LOKS at full load.
a. 12 kg
b. 22 kg
c. 32 kg
d. None of the above
22 kg
743
Flow rate requirement for LOKS at a mean pressure of 300kPa.
a. 0.3 to 1.4 lpm
b. 1.4 to 2.0 lpm
c. 2.0 to 2.9 lpm
d. None of the above
0.3 to 1.4 lpm
744
Maximum pumping rate requirement for LOKS
a. 20 strokes per minute
b. 40 strokes per minute
c. 60 strokes per minute
40 strokes per minute
745
A rice thresher was newly purchased by a farmer. After 4 months
of continuous use, the pillow block bearing was heavily worn out.
As agricultural engineer, what would you recommend to the
farmer?
a. Bring the bearing for replacement to the manufacturer of the
thresher.
b. Buy a new bearing and replace it.
c. Ask the manufacturer to pay for the bearing unit.
d. None of the above
Buy a new bearing and replace it.
746
The power tiller handle was detached from the main frame
assembly due to a tremendous lateral load during plowing. The
machine was purchased 4 months ago from a nearby
manufacturer. What would you recommend to the farmer?
a. Buy new handle and replace the old one.
b. Consult the manufacturer and request for replacement of the
handle.
c. Bring a welding machine and weld the handle to the frame of
the power tiller.
d. None of the above
Consult the manufacturer and request for replacement of the
handle.
747
The engine vibrates too much during threshing operation. To
reduce vibration, what would you recommend?
a. Weld the engine into the frame of the thresher.
b. Ask another person to firmly hold the engine.
c. Tighten bolts and nuts at the engine frame of the thresher.
d. None of the above
Tighten bolts and nuts at the engine frame of the thresher.
748
Welding job will be performed at the engine drive of a multiple
pass rice mill. To prevent possible accident during the repair
work, what would you recommend?
a. Remove the engine from the drive.
b. Disconnect the line from the terminal of the battery.
c. Remove the ground line of the welding machine from the
engine drive.
d. None of the above
Disconnect the line from the terminal of the battery.
749
A type of centrifugal with a casing made in the form of a spiral
curve.
a. Diffuser pump
b. Volute pump
c. Self-priming pump
d. None of the above
Volute pump
750
A type of centrifugal pump wherein the impeller is surrounded by
series of vanes
a. Diffuser pump
b. Volute pump
c. Self-priming pump
d. None of the above
Diffuser pump
751
Filling up of pump with water to displace or evacuate the
entrapped air through a vent and create a liquid seal inside the
casing.
a. Pumping
b. Flushing
c. Priming
d. None of the above
Priming
752
Graphical representation of the interrelationship between the
capacity, head, power, NPSH, and efficiency of a pump
a. Capacity-power curve
b. Pump efficiency curve
c. Pump performance curve
d. None of the above
Pump performance curve
753
Required water temperature in testing pump.
a. 10 C and below
b. 10 C – 40 C
c. 40 C - 60 C
d. None of the above
10 C – 40 C
754
Compute the volumetric efficiency of a sprayer pump having a
diameter of 20 cm and a stroke of 20 cm. The actual volume of
water displaced per stroke is 0.460 liter.
a. 85%
b. 92%
c. 98%
d. None of the above
92%
755
Compression ratio is equal to ____________
a. piston displacement volume plus clearance volume over
clearance volume.
b. total volume over clearance volume.
c. piston displacement volume plus combustion chamber volume
over combustion chamber volume.
d. All of the above
d. None of the above
All of the above
756
Power recommended by manufacturer for satisfactory operation
under continuous duty condition with specified speed range.
a. Rated brake power
b. Continuous brake power
c. Engine brake horsepower
d. None of the above
Continuous brake power
757
It is the maximum brake power, fuel consumption, and operating
characteristics of the engine at different speeds.
a. Engine performance curve
b. Engine performance
c. Engine specification
d. None of the above
Engine performance
758
Highest power developed by an engine.
a. Peak brake power
b. maximum brake power
c. Rated brake power
d. None of the above
Peak brake power
759
Highest power developed by an engine at a given speed.
a. Peak brake power
b. Maximum brake power
c. Full brake power
d. None of the above
Maximum brake power
760
Warranty requirement for grain dryers.
a. 6 months
b. 8 months
c. 12 months
d. None of the above
12 months
761
Pressure build up at the plenum chamber to maintain uniform
distribution of air flow through the grain mass.
a. Velocity pressure
b. Static pressure
c. Total pressure
d. None of the above
Static pressure
762
It is the ratio pf the weight of the shelled corn kernels collected at
the main outlet to the total weight of the corn kernel input of the
sheller expressed in percent.
a. Shelling efficiency
b. Shelling recovery
c. Shelling index
d. None of the above
Shelling recovery
763
It is the ratio of the weight of the shelled corn kernel collected at
all outlet of the sheller to the weight of the corn kernel input of the
sheller expressed in percent.
a. Shelling efficiency
b. Shelling recovery
c. shelling index
d. None of the above
Shelling efficiency
764
Applicable key for sliding type shaft and hub assembly.
a. Parallel key
b. Woodruff key
c. Taper key
d. All of the above
Parallel key
765
Applicable key for assembly that hub is fastened on the key fixed
on a shaft or assembly that the key is driven between the
combined shaft and hub.
a. Parallel key
b. Woodruff key
c. Taper key
d. All of the above
All of the above
766
Minimum allowance for face width of flat pulley having a belt
width under 305 mm.
a. 25 mm
b. 51 mm
c. 76 mm
d. None of the above
25 mm
767
Minimum allowance for the face width of flat pulley having a belt
width over 610 mm.
a. 25 mm
b. 51 mm
c. 76 mm
d. None of the above
76 mm
768
Flat belt that has the advantage of high tensile strength to hold
metal fasteners satisfactorily and is resistance to deterioration by
moisture.
a. Rubberized fabric belt
b. Reinforced nylon chord belt
c. Canvass belt
d. None of the above
Rubberized fabric belt
769
Flat belt materials that is oil and heat resistant.
a. Rubberized fabric belt
b. Reinforced nylon chord belt
c. Canvass belt
d. None of the above
Reinforced nylon chord belt
770
Power rating of type B v-belt.
a. 0.186 to 1.457 kw
b. 0.764 to 18.642 kw
c. 11.186 to 74.570 kw
d. None of the above
0.764 to 18.642 kw
771
Top width and height of type B v-belt
a. 13 mm x 8 mm
b. 16 mm x 10 mm
c. 22 mm x 13 mm
d. None of the above
16 mm x 10 mm
772
Implement used for crushing the soil clods and compacting the
soil.
a. Roller harrow
b. Packer
c. Rotary hoe
d. None of the above
Packer
773
Implement used for seedbed preparation which crushes soil clods
and smoothen and firm the soil surface.
a. Roller harrow
b. Packer
c. Rotary Hoe
d. None of the above
Roller harrow
774
General fragmentation of a soil mass resulting from the action of
tillage forces.
a. Soil reaction
b. Soil shatter
c. Soil sliding
d. None of the above
Soil shatter
775
Implement for dislodging small weeds and grasses as for breaking
soil crush and is used for fast, shallow cultivation before or soon
after crop plant emerge.
a. Roller harrow
b. Packer
c. Rotary Hoe
d. None of the above
Rotary Hoe
776
An engine was tested on a brake dynamometer at a speed of 2000
rpm. The brake arm of the machine is 1.2 meters and it registered
a load of 5 kg. What is the shaft power of the engine?
a. 16.51 hp
b. 20.56 hp
c. 34.21 hp
d. None of the above
16.51 hp
777
The engine fuel tank was completely filled with gasoline fuel
before testing. After 4 hours of continuous test 3.7 liters of fuel
was used to reload the tank completely. Test has shown that the
engine shaft power was 10 hp. What is the specific fuel
consumption of the engine?
a. 87.4 g/kW-hr
b. 92.13 g/kW-hr
c. 100.45 g/kW-hr
d. None of the above
92.13 g/kW-hr
778
A power tiller was tested on a 10 m wide plot. During the test, the
machine made 22 rounds to complete the plowing operation using
two-0.3 m diameter disk plow. What is the average swath of the
power tiller?
a. 0.23 m
b. 0.32 m
c. 0.41 m
d. None of the above
0.23 m
779
The effective width of cut of a single bottom moldboard plow
drawn by a power tiller is 10 cm. If the machine will be used to
plow a 2 hectare farm, what is the total distance that would be
traveled by the machine in order to accomplished the task?
a. 200 m
b. 200 km
c. 200 miles
d. All of the above
200 km
780
The axle of a power tiller was tested on a Prony-brake
dynamometer. The force delivered at the brake arm of 1 m was
300 kg at a speed of 25 rpm. Determine the torque.
a. 300 kg-m
b. 300 N-m
c. 300 ft-lb
d. None of the above
What is the shaft power of the power tiller above?
a. 5.59 hp
b. 5.95 hp
c. 9.55 hp
d. None of the above
300 kg-m
5.59 hp
781
Also compute the specific fuel consumption of the engine that
drive the power tiller above if it consumes diesel at a rate of 0.9
liters per hour.
a. 181.06 g/kW-hr
b. 181.06 g/hr-kW
c. 0.181 kg/kW-hr
d. All of the above
All of the above
782
Compute the friction head from a 6 meter depth suction pipe of a
centrifugal pump which discharges 0.2 m3 /sec of water. The pipe nominal diameter is 4 inches.
a. 0.864 m per 1000 meters length of pipe
b. 0.864 m per 100 meter length of pipe
c. 0.864 m
d. None of the above
0.864 m
783
A pump which discharges 4 liters per second at a head of 6 meters
is driven by electric motor. The input current of the motor is 1.5
amp while the input voltage is 220 volt. What is the overall
efficiency of the pump if the motor power factor is 0.98?
a. 71.2%
b. 72.7%
c. 77.1%
d. None of the above
72.7%
784
A pump was installed with a suction head of 6 m and a discharge
head of 10 meters. The discharge rate of the pump is 60 liters per
minute. What is the water horsepower of the pump?
a. 0.210 hp
b. 0.120 hp
c. 0.210 kW
d. None of the above
0.210 hp
785
A pump was tested to measure the flow rate using a 90 degree
triangular weir. Tests have shown that the head of water into the
weir averages to 13 cm. What is the average rate of flow of the
pump?
a. 12.2 lps
b. 22.2 lps
c. 32.2 lps
d. None of the above
12.2 lps
786
A 1.5 kW split phase motor running at 1740 rpm is to be used to
drive a bucket elevator. The elevator should run at a speed of
approximately 60 rpm. If the service factor for the bucket
elevator is 1.3, what is the design power for the drive?
a. 1.50 kW
b. 1.95 kW
c. 2.01 kW
d. None of the above
1.95 kW
787
What is the speed ratio for the drive above if the motor pulley is 4
inches?
a. 1: 20
b. 1: 29
c. 1: 38
d. None of the above
Recommend for a belt section suitable for the drive above.
a. Type A
b. Type B
c. Type C
d. None of the above
1: 29
Type B
788
Compute the correction factor for a 9.6 BHP spark ignition engine
tested at 30 C ambient air temperature and total atmospheric air
condition of 1011 mbar.
a. 0.980
b. 1.019
c. 1.119
d. None of the above
What is the corrected BHP of the engine above?
a. 9.41 hp
b. 9.78 hp
c. 10.742 hp
d. None of the above
1.019
9.78 hp
789
A four-stroke naturally-aspirated diesel engine was tested on a
prony brake dynamometer and gives a BHP output of 14.2
horsepower. During the test the ambient air temperature is 27 C
while the total atmospheric pressure is 1020 mb. What is the
corrected brake horsepower of the engine?
a. 14.2 hp
b. 14.3 hp
c. 14.6 hp
d. None of the above
14.3 hp
790
The center of gravity of a standard two-wheel drive tractor is
located _________
a. at the mid center of the tractor.
b. 1/3 of the wheel base ahead of the rear wheel axle of the
tractor.
c. near the front axle wheel of the tractor.
d. None of the above
1/3 of the wheel base ahead of the rear wheel axle of the
tractor.
791
The center of gravity of a four-wheel drive tractor is located
___________
a. at the mid center of the tractor.
b. 1/3 of the wheel base ahead of the rear wheel axle of the
tractor.
c. near the front axle wheel of the tractor.
d. None of the above
at the mid center of the tractor.
792
John Deere tractor is made from _____________
a. USA
b. Japan
c. Finland
d. None of the above
USA
793
Massey Ferguson tractor is made from _________
a. Finland
b. United Kingdom
c. USA
d. None of the above
United Kingdom
794
Ford tractor is made from ___________
a. United Kingdom
b. USA
c. France
d. None of the above
USA
795
Goldstar tractor is made from ____
a. Japan
b. Korea
c. China
d. None of the above
Korea
796
Valtra Velmet tractor is made from ______
a. Finland
b. Brazil
c. France
d. None of the above
Finland
797
Maxion tractor is made from _______
a. Finland
b. Brazil
c. France
d. None of the above
Brazil
798
A roller chain drive is to transmit 7.457 kW from a drive shaft to a
driven shaft of a fruit conveyor power. The drive shaft operates at
1200 rpm while the driven shaft must operate between 370 to 380
rpm. The center distance between drive shafts as calculated is
approximately 572 mm. What is the design power for the drive if
the service factor equal to 1.5?
a. 7.4 kW
b. 11.2 kW
c. 13.4 kW
d. None of the above
11.2 kW
799
What is the power rating of the drive above if the design life is
5000 hours?
a. 11.2 kW
b. 6.9 kW
c. 3.7 kW
d. None of the above
What is the speed ratio of the drive above?
a. 1.8
b. 3.7
c. 5.5
d. None of the above
3.7 kW
3.7
800
If 11 teeth sprocket will be used for the drive shaft, how many
sprocket teeth will be used for the driven shaft?
a. 45 teeth
b. 42 teeth
c. 40 teeth
d. None of the above
45 teeth
801
If the chain pitch is 12.7 mm, what is the length of chain needed
for the drive?
a. 100 pitches
b. 120 pitches
c. 140 pitches
d. None of the above
140 pitches
802
Pattern efficiency for headland-type field machine pattern on
rectangular field.
a. 93.0%
b. 95.7%
c. 94.8%
93.0%
803
Pattern efficiency for continuous-type field machine pattern on
rectangular field
a. 93.0%
b. 95.7%
c. 94.8%
d. None of the above
95.7%
804
Pattern efficiency for circuitous-type field machine pattern on
rectangular field
a. 93.0%
b. 95.7%
c. 94.8%
d. None of the above
94.8%
805
A three-pulley drive is used to deliver power from an electric
motor at a speed of 17720 rpm to two component parts if a
machine. The motor pulley has a diameter of 4 inches while the
two machines has a pulley diameters of 6 inches and 8 inches,
respectively. Neglecting the belt slip, what are the speeds of the
two pulleys above?
a. 1146 rpm & 860 rpm
b. 1010 rpm & 840 rpm
c. 980 rpm & 760 rpm
d. none of the above
1146 rpm & 860 rpm
806
If the center distances of the three pulleys above are: 24 in., 36
in., and 42 in. for pulley 4 to 6, 6 to 8, and 8 to 4 pulley diameters,
respectively, what is the recommended length of the belt needed
above? Assume an angle of arc of 135 for pulley 6 and 8, while
90 for pulley 4 inch diameter.
a. 98.45 in.
b. 101.56 in.
c. 110.34 in.
d. none of the above
101.56 in.
807
A rice mill transmission drive uses a standard flat belt of 20 ft.
long. The pulley diameter of the power source is 6 inches. The
pulley diameter of the line shaft is 16 inches. What is the center
distance required for the two shafts?
a. 24.7 ft
b. 20.3 ft
c. 18.6 ft
d. none of the above
What is the arc of contact of the small pulley above?
a. 177 degree
b. 210 degree
c. 221 degree
d. none of the above
What is the arc of contact of the larger pulley above?
a. 183 deg
b. 150 deg
c. 139 deg
d. none of the above
18.6 ft
177 degree
183 deg
808
A soil pulverizer with pulley diameter of 4 inches runs at a shaft
speed of 3,000 rpm. The 10 hp diesel engine will be used to
operate at a speed of 1740 rpm. What will be the size of the pulley
for the motor?
a. 7 in.
b. 5 in.
c. 3 in.
d. none of the above
7 in.
809
If the standard B72 V-pulley will be used, what would be the center
distance of the pulley?
a. 27 in.
b. 30 in.
c. 35 in.
d. none of the above
27 in.
810
What is the speed of the belt in m/s?
a. 3001.7 rpm
b. 3141.6 rpm
c. 3250.6 rpm
d. none of the above
3141.6 rpm
811
What is the arc of contact of the small pulley?
a. 160 deg
b. 169 deg
c. 174 deg
d. none of the above
174 deg
812
What is the arc of contact of the larger pulley?
a. 186 deg.
b. 178 deg
c. 172 deg
d. none of the above
186 deg.
813
An engine is transmitting 13 hp to an axial flow biomass shredder.
The engine pulley is 4 inches in diameter and runs at a standard
speed of 1740 rpm. What is the effective pull of the belt?
a. 980.67 N
b. 1,001.86 N
c. 1,047.44 N
d. none of the above
1,047.44 N
814
A flat belt with hp rating of 5 kW/mm will be used to transmit 10
hp. What is the width of the belt needed for the drive? Assume a
service factor of 2.0 and an arc correction factor of 0.79.
a. 3.78 mm
b. 2.98 mm
c. 2.68 mm
d. none of the above
3.78 mm
815
A gasoline engine was tested on a prony brake dynamometer. The
engine runs at a speed of 200 rpm and registers a load of 100 kg to
a 0.8 m brake arm. What is the BHP of the engine?
a. 17 hp
b. 22 hp
c. 46 hp
d. none of the above
22 hp
816
If the average ambient air temperature condition during test was
27C and the atmospheric pressure is 1010 mbar, what is the
corrected BHP of the engine?
a. 0.98
b. 1.00
c. 1.01
d. none of the above
1.01
817
A multi cylinder engine was tested on a prony brake dynamometer.
The average shaft torque of the engine was 250 kg-m at a speed of
1000 rpm. What is the power output of the engine?
a. 652.6 kW
b. 562.5 kW
c. 256.6 kW
d. none of the above
256.6 kW
818
A ball bearing has a basic dynamic capacity of 1500N. During
operation, the actual load of the bearing unit is 152N. What is the
life of the bearing in years if it is to be operated continuously for 4
hrs. a day, 20 days per month and 6 months per year operation?
The bearing runs at 1000 rpm.
a. 34.5 years
b. 45.3 years
c. 53.4 years
d. none of the above
34.5 years
819
A five-row seeder will be used to place 5 seeds per hill to a 100
hectare farm. The seeder row spacing is 30 cm while the hill
spacing is 25 cm. Compute the number of hills to be planted for the
entire area?
a. 12,888,666 hills
b. 13,333,333 hills
c. 14,121,122 hills
d. none of the above
If the seeder travels at 15 kph, what is the theoretical field capacity
of the machine?
a. 2.25 ha/hr
b. 2.15 ha/hr
c. 2.01 ha/hr
d. none of the above
What is the effective field capacity of the machine if the field
efficiency is 90%?
a. 2.025 ha/hr
b. 1.983 ha/hr
c. 1.869 ha/hr
d. none of the above
How long does the machine finish the job if it will be operated at 8
hrs. per day and 20 days per month?
a. 2 days
b. 4 days
c. 6 days
d. none of the above
If the seeds weigh 0.1 g/seed and requires 5 seeds per hill, what is
the total weight of the seeds needed? % germinability of seeds is
98%.
a. 6.8 tons
b. 6.2 tons
c. 7.9 tons
d. none of the above
13,333,333 hills
2.25 ha/hr
2.025 ha/hr
6 days
6.8 tons
820
A power tiller draws a two-row seeder at 30 cm spacing. The
seeder has a 6-pocket metering device and is driven by a 0.4 m
ground wheel. If the required hill spacing is 0.3 m, what is the
recommended sprocket ratio for the drive?
a. 1.43
b. 1.56
c. 2.01
d. none of the above
What is the theoretical field capacity of the implement if it will run
at 4 kph?
a. 0.21 ha/hr
b. 0.24 ha/hr
c. 0.26 ha/hr
d. none of the above
What is the effective field capacity of the implement if its field
efficiency is 90%?
a. 0.201 ha/hr
b. 0.209 ha/hr
c. 0.216 ha/hr
d. none of the above
If the seeds per hole is required at 0.08 g/seed, how many kilos of
seeds are needed to finish 10 ha? Assume germination percentage
at 90%.
a. 286 kg
b. 296 kg
c. 306 kg
d. none of the above
How many hills will be planted for the 10-hectare farm?
a. 999,999 hills
b. 1,111,111 hills
c. 2,111,111 hills
d. none of the above
How many days will the operation be finished?
a. 4.9 days
b. 5.7 days
c. 6.1 days
d. none of the above
If the speed ratio to be used is 1.5, what is the distance per hill?
a. 0.312 m
b. 0.314 m
c. 0.324 m
d. none of the above
1.43
0.24 ha/hr
0.216 ha/hr
296 kg
1,111,111 hills
5.7 days
0.314 m
821
A water pump with a 0.2m diameter propeller discharges 60 lpm of
water at a head of 5 m. depth suction and 1 m. discharge. The
pump is driven by an electric motor at 1720 rpm. The pump
efficiency is 72%, and 90%, respectively. Compute the WHP.
a. 0.07 hp
b. 0.08 hp
c. 0.09 hp
d. none of the above
What is the BHP?
a. 0.11 hp
b. 0.12 hp
c. 0.13 hp
d. none of the above
What is the MHP?
a. 0.12 hp
b. 0.13 hp
c. 0.14 hp
d. none of the above
If the speed of the pump is to be reduced to 1200 rpm, what is the
capacity of the pump?
a. 39 lpm
b. 41 lpm
c. 43 lpm
d. none of the above
What is the working head?
a. 2.85 m
b. 2.78 m
c. 2.63 m
d. none of the above
What is the MHP?
a. 0.028 hp
b. 0.039 Hp
c. 0.041 hp
d. none of the above
0.08 hp
0.11 hp
0.13 hp
39 lpm
2.85 m
0.039 Hp
822
Determine the width of cut of a six-800 mm diameter disk plow
spaced at 350 mm.
a. 2.8 m
b. 2.7 m
c. 2.6 m
d. none of the above
2.8 m
823
What is the effective field capacity of eight-900 mm diameter disk
plow running at a speed of 10 kph. The disks are spaced at 500
mm. Assume a plowing efficiency of 80%.
a. 3.76 ha/hr
b. 3.35 ha/hr
c. 3.01 ha/hr
d. none of the above
3.76 ha/hr
824
A farmer has a pump which discharges 100 lpm of water at a head
of 10 m. The pump is driven by an electric motor at a speed of
1700 rpm through a 4” x 4” pulley-drive combination for the motor
and the pump, respectively, what would be the pump output if the
motor pulley is changed to six inches diameter?
a. 145 lpm
b. 150 lpm
c. 155 lpm
d. none of the above
150 lpm
825
826
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