Part 6 Flashcards
When welding deposit is applied to strengthen peg-tooth of a rice thresher, this method of treating metal is used.
Heat treatment
Welding
Hard facing
None of the above
Answer: Hard facing
Mixing of two or more substances wherein one of which is metal
Casting
Forging
Alloying
None of the above
Answer: Alloying
If some belts on multiple v-belt drive are worn out, it is recommended that
Worn-out belts should be immediately replaced
All belts should be replaced
Wait until all belts are worn-out before replacing the belts
None of the above
Answer: All belts should be replaced
Which of the following v-belt is larger and stronger?
Type A
Type B
Type C
All of the above
Answer: Type C
Commonly used V-belt for agricultural operation in the Philippines
Type A
Type B
Type C
All of the above
Answer: Type B
A service offered by manufacturers in repairing and replacing unintentionally damaged part of a machine to its customers for a specific period.
Manufacturing service
Customer’s Service
After-sales service
All of the above
Answer: After-sales service
Cost of machine including shipment.
Free-on board
Freight-on-board
Cost-in-freight
None of the above
Answer: Cost-in-freight
The strength, durability, and service of a farm machine depends largely on
Cost of material
Weight of material
Quality of material
All of the above
Answer: Quality of
material
A substance commonly used as coating to protect iron against corrosion.
Tin
Zinc
Aluminum
All of the above
Answer: Zinc
When buying flat belt, the common parameters used are
Width and thickness
Width and ply no.
Width and weight
None of the above
Answer: Width and ply no.
A v-belt whose specification is B-32 means\
Type B with circumferential length of 32 inches
Type B with circumferential length of 32 cm
Standard type v-belt whose strength is 32 times stronger than type B
None of the above
Answer: Type B with circumferential length of 32 inches
In a variable-pitch sheaves, the recommended belts used are
Double v-belt
Timing v-belt
Adjustable speed belt
None of the above
Answer: Adjustable speed belt
A device that gives mechanical advantage.
Fulcrum
Pulley
Wheel and axle
All of the above
Answer: All of the above
The smallest gears that are meshing together.
Spur
Bevel
Pinion
All of the above
Answer: Pinion
A type of gear used for power-take off drive.
Worm gear
Spur gear
Spline shaft gear
None of the above
Answer: Spline shaft gear
If roller chain number 40 is to be replaced by no. 60, the strength of chain is
Decreased
Increased
Remain except the size
None of the above
Answer: Increased
The ASAE designation for adjustable speed v-belt is
HA to HD
HAA to HCC
HI to HO
All of the above
Answer: HI to HO
A component part of machine that transmits torque and speed is
Bearing
Shaft
Chain
None of the above
Answer: Shaft
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
Belt and pulley
Sprocket and chain
Direct couple drive
None of the above
Answer: Direct couple drive
A pulley that is used to tighten belt in a drive system.
Flat pulley
Idler pulley
V-pulley
None of the above
Answer: Idler pulley
A grove that is placed on a shaft to prevent pulley from slippage.
Keyway
Keyhole
Key
None of the above
Answer: Keyway
The recommended drive to transmit power to a shaft located about 6 meters is
Chain drive
Gear drive
V-belt drive
None of the above
Answer: _______
If the desired rotation for two parallel shafts is counterclockwise, what flat-bed drive would you recommend?
Open drive
Quarter turn drive
Cross drive
All of the above
Answer: Cross drive
If large target factor of safety is used in the design, product would tend to
Reliable
Expensive
Efficient
None of the above
Answer: Expensive
Standards are used in the design basically to
Reduce cost of product
Minimize potential liability in designing a product
Provide easy mechanism for interchanging machinery parts.
All of the above
Answer: All of the above
A metal sheet with gauge number equal to 14 means
14 mm thick
14 pieces of metals sheet in a stock
14 pieces in one inch thickness
None of the above
Answer: 14 pieces in one inch thickness
A 4 feet wide x 8 feet long with 1/8-in. thick is
Metal sheet
Metal plate
Metal strip
None of the above
X
Answer: Metal plate
A material commonly used as axle of agricultural machines
Cold rolled steel shaft
Malleable steel round bar
Round cast iron
None of the above
Answer: Cold rolled steel shaft
The factor that affects the horsepower requirement of a shaft.
Torque
rpm shaft
Peripheral velocity of shaft
All of the above
Answer: All of the above
Flat pulleys are provided with crown to
Keep the required tension of belt
Prevent belt slippage
Make the pulley durable
None of the above
Answer: Prevent belt slippage
If the driver pulley diameter is increased, the speed of the driven pulley will
Decrease
Increase
Rotate at the same speed
None of the above
Answer: Increase
If the two shafts are perpendicular with each other, what type of driven system would you recommend?
Flat belt
V-belt
Sprocket and chain
All of the above
Answer: Flat belt
The transmission ratio of power tiller ranged from
1:2 to 1:4
1:7 to 1:10
1:12 to 1:16
All of the above
Answer: 1:7 to 1:10
A gauge 20 metal sheet in a 2-inch pile of sheet has
20 sheets
40 sheets
60 sheets
None of the above
Answer: 40 sheets
An alloy basically consists of
One metal
Two metals or more
One metal and one non-metal
None of the above
Answer: Two metal or more metals
Steel bars which are commonly used in the construction of agricultural machines.
Spring steel
Mild steel
Cold rolled steel
None of the above
Answer: Mild steel
A steel bars used as machine axle is
Hot rolled steel
Cold rolled steel
Mild steel
None of the above
Answer: Cold rolled steel
It is a welding process that uses an electrode.
Gas welding
Resistance welding
Arc welding
None of the above
Answer: Arc welding
The standard length of bars available at the hardware is
10 ft.
20 ft.
30 ft.
None of the above
Answer: 20 ft.
The higher schedule specification of pipe, the lower is its
Length
Nominal diameter
Thickness
None of the above
Answer: None of the above
The higher is the gauge number of metal sheet, the lower is the
Thickness
Width
Length
None of the above
Answer: Thickness
A welding process commonly used for thin sheets of metal.
Brazing
Soldering
Spot welding
None of the above
Answer: Soldering
It is the process of making metal product by pouring melted metal into a mold and then allowed to cool.
Hot working process
Casting
Powder metallurgy
None of the above
Answer: Casting
A machine tool used to reduce the diameter of a metal.
Router
Power drill
Lathe
None of the above
Answer: Lathe
It is a process of cutting hole to a material by means of shearing process.
Drilling
Punching
Boring
None of the above
Answer: Punching
A sand paper with number of C-300 is finer than
C-120
C-400
C-600
None of the above
Answer: C-120
A screw used to fix metal parts together.
Self-tapping screw
Cap screw
Lag screw
None of the above
Answer: Self-tapping screw
A screw with shield to fix material property together.
Cap screw
Tex screw
Self-tapping screw
None of the above
Answer: None of the above
If a metal has a thickness of less than 1/8 inch it is called as
Strips
Sheet
Plate
All of the above
Answer: Sheet
When buying angle bars, the right specification is
Thickness and width
Thickness and length
Width and length
All of the above
Answer: Thickness and width
Which of the following metals is stronger?
Tool steel
Spring steel
Stainless steel
All of the above
Answer: Tool steel
The higher the carbon content of steel, the ______
Weaker is the steel
Stronger is the steel
Smaller is the steel
Bigger is the steel
Answer: Stronger is the steel
A tool that cut metal bar faster.
Shear cutter
Band saw
Grinding wheel
None of the above
Answer: Grinding wheel
Filing is classified as
Cold working
Hot working
Casting
None of the above
Answer: Cold working
Ability of material to resist indention.
Brittleness
Toughness
Hardness
All of the above
Answer: Hardness
Property of metal to join together with other metal at liquid state.
Ductility
Workability
Fusibility
None of the above
Answer: Fusibility
A machine element used to tighten bolt.
Washer
Rivet
Nut
All of the above
Answer: Nut
A welding process wherein current is allowed to pass through the prongs of the welding machine which joined two metal sheets together.
Resistance welding
Oxyacetylene welding
Arc welding
None of the above
Answer: Resistance welding
A material that is resistant to salt corrosion.
Mild steel
Cast iron
Stainless steel
All of the above
Answer: Stainless steel
Which of the metal sheets is thicker than from gauge 20?
Gauge 18
Gauge 22
Gauge 24
Two of the above
Answer: Gauge 18
Materials suitable to resist rusting.
GI sheet
BI sheet
All of the above
None of the above
Answer: GI sheet
Paint that is most suitable for metals.
Latex paint
Enamel paint
Acrylic paint
None of the above
Answer: Acrylic paint
Which is the following is used for acrylic paint?
Paint thinner
Lacquer thinner
Primer epoxy
None of the above
Answer: None of the above
A coating material to protect metal from rusting.
Primer epoxy
Red oxide
Red lead
All of the above
Answer: All of the above
When a machine is driven directly from the shaft of a power, the power source is transmitted using
Gear drive
Sprocket and chain drive
Direct drive
None of the above
Answer: Direct Drive
Belt size designation for agricultural V-belt is
A, B, C, D, E
HA, HB, HC, HD, HE
AA, BB, CC, DD, EE
None of the above
Answer: HA, HB, HC, HD, HE
It is a gripping device between power sources.
Clutch
Chain
Springs
None of the above
Answer: Clutch
A machine elements that transmits torque and power.
Pulley
Bearing
Shaft
None of the above
Answer: Shaft
It is used to fasten shafts, pulleys, and hubs of gears together.
Bolt
Springs
Keys
None of the above
Answer: Keys
A universal joint is
A connector which can be used on all brands of tractor
Used to transmit power between two intersecting shafts usually when the angle between them is variable
A prohibited drug used universally
None of the above
Answer: Used to transmit power between two intersecting shafts usually when the angle between them is variable
The length of chain usually expressed in
Inches
Meters
Pitches
None of the above
Answer: pitches
A device usually used to connect to shafts on a direct drive system.
Clutch
Coupler
Pulley
None of the above
Answer: Coupler
Warranty of parts and services for heated-air mechanical grain dryer based on PAE Standards is within___ after the acceptance of the machine.
6 months 12 months 18 months 24 months None of the above
Answer: 12 months
It is the ratio of the heat released by the fuel heated air mechanically dryer to the theoretical heat available from the fuel.
Burner efficiency
Furnace efficiency
Combustion efficiency
None of the above
Answer: Combustion efficiency
In testing agricultural machines as prescribed in the PAES standard of the, it should be operated by_____.
Farmers Traders/cooperatives Manufacturer(s) representatives Accredited testing organization None of the above
Answer: Manufacturer(s) representatives
Holding capacity of the mechanical dryer testing as prescribed by PAES should be based on the ___ and other accompanying information such as moisture content and purity.
Volume
Weight
Density
None of the above
Answer: Weight
Milling test of samples during the test of mechanical grain dryer based on PAES standard test should be conducted at least ___after drying test.
24 hours
48 hours
36 hours
None of the above
Answer: 48 hours
Thermometer sensors during testing of agricultural machines should be partially shielded to minimize ___.
Mechanical damage of thermometer sensor
Error from heat of radiation effect
Error from conduction of heat from wall of the machine
None of the above
Answer: Error from heat of radiation effect
The minimum number of trials required in testing heated air mechanical grain dryer as specified in PAES.
One
Two
Three
None of the above
Answer: Two
Time interval of measurement of test parameters in heated air mechanical dryer as specified in the PAES Test Method .
15 minutes
30 minutes
45 minutes
60 minutes
Answer: 30 minutes
Commonly used threshing cylinder for axial flow rice thresher.
Peg tooth
Rasp bar
Wire loop
None of the above
Answer: Peg tooth
The shaft rpm of the rice thresher will need to be ___ if the diameter of the threshing cylinder is reduced.
Increased
Reduced
Remain the same
None of the above
Answer: Increased
Warranty of the construction and durability of the mechanical rice thresher according to PAES standard shall be within ___after the purchase of the machine.
6 months 12 months 18 months 24 months None of the above
Answer: 6 months
All rotating parts of the agricultural machines as provided in the PAES should be
Rigid
Dynamically balanced
Uniform in speed
None of the above
X
Rigid
Dynamically balanced
Uniform in speed
None of the above
Answer: Dynamically balanced
Which of the following parts are treated to be dangerous as stated in PAES for ensuring safety in agricultural machinery?
Pulleys
Clutches
Coupling
All of the above
X
Answer: All of the above
Recommended material in the manufacture of pin sleeve and hitch pin for walking type power tiller.
Mild steel
Cold rolled steel
Spring steel
None of the above
Answer: Cold rolled steel
A centrifugal pump that develop a vacuum sufficient enough for atmospheric pressure to force the liquid through the suction pipes into the pump casing without initially feeding the pump to create suction.
Pressure pump
Self priming pump
Mixed flow pump
None of the above
X
Answer: Self priming pump
A type of pump which develops most of the suction and discharge head by propelling or lifting action of the impeller vanes on the water.
Axial-flow pump
Centrifugal pump
Mixed flow pump
None of the above
Answer: Axial-flow pump
It is the formation of the void spaces filled with water vapor due to local pressure drop and collapse as soon as the vapor bubbles reach regions of high pressures.
Water hammer
Cavitations
Bubbling
None of the above
Answer: Cavitations
A type of pump with vanes or impellers rotating inside a close housing which draws water in to the pump through a central inlet opening and forces the water out through a discharge outlet at the periphery of the housing.
Axial-flow pump
Centrifugal pump
Mixed flow pump
None of the above
Answer: Centrifugal pump
A type of pump which combines some of the feature of both the centrifugal and axial-flow pump and in which head is developed partly by the centrifugal force and partially by the lift of the vanes on the water.
Self priming pump
Diffuser type centrifugal pump
Mixed flow pump
None of the above
Answer: Mixed flow pump
This represents the interrelationship between capacity, head power, NPSH, and the efficiency of the pump.
Pump characteristics
Performance curve
Pump laws
None of the above
Answer: Performance curve
