G Flashcards
In a water pumping system, the source of water is usually at a:
a. lower elevation than pt. of delivery
b. equal elevation than ….
c. higher elevation than ….
d. a and c
a. lower elevation than pt. of delivery
Which of the following agencies does not belong to the Department of
Agriculture?
a. BPRE
b. BPI
c. AMMDA
d. RAEG
c. AMMDA
In the equation for horsepower, Hp =
3960xEff
QxH
, H is total head in:
a. ft.
b. ft/min
c. meters
d. meters/min
a. ft.
The power unit for driving centrifugal pumps for household use is
usually:
a. electric motor
b. gasoline engine
c. diesel engine
d. kerosene engine
a. electric motor
If the specific yield of a particular well is 3 gpm/ft drawdown and the
discharge rate of the pump is 30 gpm, the total drawdown is:
a. 1 ft
b. 3 ft
c. 10 ft
d. 30 ft
c. 10 ft
According to the National Irrigation Administration (NIA), water
requirement for rice production is:
a. 5 mm/day
b. 10 mm/day
c. 15 mm/day
d. 20 mm/day
b. 10 mm/day
The traditional system of harvesting and threshing of rice is:
a. manual harvesting and threshing
b. manual harvesting and mechanical threshing
c. mechanical harvesting and threshing
d. combining
a. manual harvesting and threshing
Among the factors affecting the choice of harvesting and threshing
system, which one is the major factor?
a. kind of crop
b. timeliness of operation
c. topography
d. farm size
b. timeliness of operation
The threshing action most commonly employed by a mechanical thresher for
rice is:
a. rubbing action
b. impact action
c. stripping action
d. all of the above
b. impact action
Average harvesting losses of rice at maturity date is 3.35 %, but two
weeks after maturity date this will increase to:
a. 5.63%
b. 8.64%
c. 40.70%
d. 60.46%
b. 8.64%
The threshing action where grains are detached from their panicles when the
straw is pulled through a “V” shaped configuration is called:
a. rubbing action
b. impact action
c. stripping action
d. a and b
c. stripping action
An internal combustion engine that produces two power stroke in two
revolution of the crankshaft.
a. Four-stroke cycle engine
b. Two-stroke cycle engine
c. One-stroke cycle engine
d. None of the above
b. Two-stroke cycle engine
A fuel commonly used for external combustion engine.
a. Gasoline
b. Diesel
c. Biomass
d. None of the above
c. Biomass
Fuel used for constant volume cycle internal combustion engine.
a. Gasoline
b. Diesel
c. Biomass
d. None of the above
a. Gasoline
A crawler-type tractor of the same weight provides __________ soil
compacting pressure than wheel type tractor.
a. higher
b. lower
c. the same
d. None of the above
b. lower
Which of the following engine requires frequent maintenance?
a. Compression ignition engine
b. Spark-ignition engine
c. Air cooled compression ignition engine
d. All of the above
b. Spark-ignition engine
The direction of a crawler-type tractor can be maneuvered by __________
a. stopping the engine
b. stopping one of its wheels
c. using the stirring wheel
d. None of the above
b. stopping one of its wheels
This is the most common cause of short life of lead acid battery. It
results when a cell or battery is permitted to remain in a discharged
condition for some length of time such that the lead sulfate hardens and
cannot be readily converted to its former state.
a. detonation
b. sulfation
c. induction
d. carburetion
b. sulfation
Engines are not normally used for:
a. 4-wheel tractors
b. power sprayers
c. 4-row harvesters
d. 1-ton rice mills
d. 1-ton rice mills
Type of engine commonly used for brush cutters.
a. 4-stroke-spark-ignition engine
b. 4-stroke-compression-ignition
c. 2-stroke-spark-ignition
d. 2-stroke –compression-ignition
c. 2-stroke-spark-ignition
Type of 2-wheel tractor equipped with a single-bottom moldboard plow and
comb-tooth harrow.
a. traction type
b. rotary type
c. standard type
d. general-purpose type
a. traction type
Bend sideward of the point of the share to make the plow cut the proper
width is:
a. vertical clearance
b. horizontal suction
c. disc angle
d. tilt angle
b. horizontal suction
The angle the disc of a disc plow makes with the direction of travel to
make it cut the proper width and allow it to rotate when moving forward
is:
a. 15 – 25 degrees
b. 42 – 45 degrees
c. 55 – 60 degrees
d. 30 – 36 degrees
b. 42 – 45 degrees
Primary tillage involves cutting the soil to a depth of:
a. up to 3 inches
b. 3 to 6 inches
c. 6 to 18 inches
d. 6 to 36 inches
d. 6 to 36 inches
Which of the following do belong to crop maintenance equipment?
a. Plow and harrow
b. Weeder
c. Sprayer
d. All of the above
a. Plow and harrow
At the downward stroke of a two-stroke cycle gasoline engine, which of
the following events takes place?
a. Power, Exhaust, and Intake
b. Compression, Exhaust, and Power
c. Compression, Power, and Intake
d. Compression, Power, and Compression
a. Power, Exhaust, and Intake
- Secondary tillage involves pulverizing the soil to a depth of:
a. up to 3 inches
b. 3 to 6 inches
c. 6 to 18 inches
d. 6 to 36 inches
b. 3 to 6 inches
. Part of the moldboard plow bottom that receives the furrowslice, lifts,
inverts and throws it to one side is called:
a. share
b. moldboard
c. landside
d. frog
b. moldboard
Width of cut of the disc plow is influenced by:
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a. disc diameter
b. depth of cut
c. disc angle
d. all of the above
d. all of the above
Part of a planter that is always present in all planters regardless of
type and cropping system:
a. furrow opener
b. metering device
c. seed tube
d. furrow closer
b. metering device
Twelve man-days is equivalent to:
a. one man working for 12 hrs
b. three men working for three days
c. six men working for 2 hrs
d. four men working for three days
d. four men working for three days
Engine piston displacement will increase if the ____________.
a. piston diameter is increased
b. piston stroke is increased
c. All of the above
d. None of the above
c. All of the above
This fuel is made by partial combustion of carbonaceous substances like
coal, wood, charcoal, sawdust and other similar materials in an
atmosphere of air and steam. It is a mixture of carbon monoxide,
hydrogen, methane, nitrogen and carbon dioxide.
a. gasohol
b. producer gas
c. natural gas
d. straight-run fuel
b. producer gas
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
a. 8-9 cm/sec
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
c. 30-40 % of SA
Number of times the exhaust valve opens in 2-stroke cycle engine running
at 2000 rpm.
a. 1000
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b. 2000
c. 1500
d. None of the above
d. None of the above
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
b. Two-stroke cycle
The speed of the engine is automatically regulated by ______
a. Hand lever
b. Governor
c. Flywheel
d. None of the above
b. Governor
Number of pistons for 6 cylinder four stroke gasoline engine.
a. 3
b. 6
c. 9
d. None of the above
b. 6
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
b. 2545 BTU/hr
Amount of power that the manufacturer specified for an engine.
a. Indicated horsepower
b. Brake horsepower
c. Rated horsepower
d. Belt horsepower
c. Rated horsepower
A device which uses fluid power to produce mechanical force and motion.
a. Governor
b. Accumulator
c. Actuator
d. None of the above
c. Actuator
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
c. Piston
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
b. Accelerator
Distance of movement piston from the top dead to the bottom dead center.
a. Stroke
b. Bore
c. Valve clearance
d. None of the Above
a. Stroke
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
a. Check valve
Reduction of engine speed or flow of fuel.
a. Throttling
b. Clutching
c. Atomization
d. None of the above
a. Throttling
Number of spark plugs for 6 cylinder diesel engine
a. 6
b. 12
c. 4
d. None of the above
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
b. Two stroke cycle engine
A device that provides ignition to a gasoline engine.
a. Flywheel
b. Fuel injector
c. Carburetor
d. Spark plug
d. Spark plug
During the power stroke, which of the following valve is open?
a. Intake
b. Exhaust
c. Intake and exhaust
d. None of the above
d. None of the above
. Usable power delivered by the engine
a. Indicated horsepower
b. Brake horsepower
c. Rated horsepower
d. None of the above
b. Brake horsepower
At the downward stroke of two-stroke cycle, which of the events are
taking place.
a. Power & intake
b. Compression & exhaust
c. Power and exhaust
d. None of the above
d. None of the above
The volume displaced by a piston in making upward and downward stroke.
a. Piston displacement volume
b. Clearance volume
c. Total volume
d. None of the above
a. Piston displacement volume
. A device that meters the fuel 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
c. Carburetor
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
d. All of the above
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
b. Puddling-type floating tiller
PAES recommended diameter of hole in the drawbar for four-wheel agricultural
tractor.
a. 30 mm
b. 33 mm
c. 36 mm
d. None of the above
b. 33 mm
Front tread of four-wheel agricultural tractor is usually adjusted by
______.
a. changing bolt position of the front axle
b. changing the size of wheel
c. changing the front axle
d. None of the above
a. changing bolt position of the front axle
. The rear wheel for two-wheel and four wheel drive tractors are adjusted by
_____.
a. inverting the wheel disc
b. changing the rear axle
c. changing the position of the bolt of the rear axle
d. None of the above
a. inverting the wheel disc
Acceptable level wheel slip for four-wheel drive tractor on a tilled or
soft soil.
a. 6 - 10%
b. 8 - 13%
c. 10 - 16%
d. None of the above
b. 8 - 13%
Acceptable level wheel slip for two-wheel drive tractor on a firm soil.
a. 7 - 11%
b. 10 - 15%
c. 16 - 20%
d. None of the above
a. 7 - 11%
. Types of brake system for agricultural tractors:
a. Internal expansion type
b. External expansion type
c. Disk type
d. All of the above
d. All of the above
It is a single or pair of wheels with radially mounted tilling blades
attached to a common shaft or axle of a puddling-type floating tiller.
a. Cage wheel
b. Tilling wheel
c. Hydro wheel
d. None of the above
b. Tilling wheel
Common designs of floatation structure for puddling-type floating tiller.
a. Elliptical-shaped
b. Boat type
c. Pontoon type
d. All of the above
d. All of the above
Another term for puddling-type floating tiller
a. Rotary tiller
b. Float-assist tiller
c. Garden tiller
d. None of the above
b. Float-assist tiller
. What type of fastener is used to fasten a metal part to wood?
a. Machine bolt
b. Lag screw
c. Carriage bolt
d. None of the above
c. Carriage bolt
. A type of disk harrow that is not directly parallel in position with the
tractor during operation.
a. Single action disk harrow
b. Double action disk harrow
c. Offset disk harrow
d. All of the above
c. Offset disk harrow
The power that is required in pulling an implement.
a. Brake horsepower
b. Drawbar horsepower
c. Power takeoff horsepower
d. All of the above
b. Drawbar horsepower
The power that is required in driving a pump shaft.
a. Brake horsepower
b. Drawbar horsepower
c. Power takeoff horsepower
d. All of the above
a. Brake horsepower
The power available at the engine shaft used in driving machinery.
a. Brake horsepower
b. Drawbar horsepower
c. Power takeoff horsepower
d. All of the above
a. Brake horsepower
Variables affecting the drawbar horsepower:
a. Implement speed and width
b. Implement width and pulling force
c. Implement pulling force and speed
d. None of the above
c. Implement pulling force and speed
PS is a German acronym for ________________.
a. Pferdestark
b. Pferdstark
c. Pferdestarke
d. None of the above
c. Pferdestarke
cv is a French acronym for ____________ .
a. Cheval-vapeur
b. Chevapeur
c. Chevalvapour
d. None of the above
a. Cheval-vapeur
pk is Dutch acronym for ____________ .
a. Paardekracht
b. Pardkract
c. Padkracht
d. None of the above
a. Paardekracht
One (1)PS is equal to _________ watts
a. 735.49
b. 740.12
c. 760.00
d. None of the above
a. 735.49
A farm is planed be planted with corn at a spacing of 30 cm x 60 cm. As
engineer in-charge of the mechanization program of the farm which of the
following equipment would you recommend?
a. Drill
b. Row Crop Planter
c. Broadcaster
d. None of the above
b. Row Crop Planter
Instrument for measuring the speed of a shaft.
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a. Odometer
b. Anemometer
c. Tachometer
d. All of the above
c. Tachometer
Instrument for measuring low-pressure head.
a. Dial type pressure gauge
b. Manometer
c. Orifice
d. None of the above
b. Manometer
It is a set of concave discs.
a. Gang
b. Disc set
c. Disc frame
d. None of the above
a. Gang
Which of the following is not a part of a typical lever-operated knapsack
sprayer?
a. tank
b. pump
c. pressure gage
d. nozzle
c. pressure gage
Ferrous metals are metals that contain __________.
a. Copper
b. Aluminum
c. Iron
d. All of the above
c. Iron
This scientific phenomenon is the basic principle of operation of spark
ignition systems of engines. It says that a change in the magnetic flux
in a conducting circuit produces current in the circuit.
a. electromagnetic induction c. Boyle’s law
b. ohm’s law d. Charles’ law
a. electromagnetic induction
Draft of disc harrows increases and penetration __________ with speed.
a. remains the same
b. increases
c. decreases
d. a or b
c. decreases
The maximum horizontal projection of a tool in the soil perpendicular to
the line of motion.
a. tool width
b. tool clearance
c. tool operating width
d. tool orientation
a. tool width
