Agricultural Machinery, Design, Fabrication/Manufacturing and Testing Flashcards
What year was the metric system first used in the Philippines?
A. 1980
C. 1982
B. 1981
D. 1983
D. 1983
A technical drawing that defines fully and clearly the requirements for engineered items.
A. Technical Specifications
C. Published Specifications
B. Detailed Specifications
D. Engineering Drawing
D. Engineering Drawing
When more strength is provided as extra margin of insurance against parts failure, it is referred to as:
A. Reliability
C. Factor of ignorance
B. Factor of safety
D. None of these
B. Factor of safety
If a large factor of safety is used in the design, the product will become:
A. Reliable
C. Efficient
B. Expensive
D. None of these
B. Expensive
The strength, durability and service of a farm machine depends largely on the:
A. Cost of materials
C. Quality of materials
B. Weight of materials
D. All of these
C. Quality of materials
Types of guards designed to prevent contact with the moving parts by a person and/or clothing:
A. Shield
C. Casing
B. Cover
D. All of these
D. All of these
Machine element that transmits torque and power.
A. Pulley
C. Shaft
B. Bearing
D. None of these
C. Shaft
A device used to transmit power by connecting shafts together.
A. Flexible coupling
C. Both A and B
B. Rigid coupling
D. None of these
C. Both A and B
When a machine is driven directly from the shaft of a power source, the power is transmitted using:
A. Gear drive
C. Direct drive
B. Sprocket and chain drive
D. None of these
C. Direct drive
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
C. Direct coupled drives
B. Sprocket and chain
D. None of these
C. Direct coupled drives
A device usually used to connect two shafts in a direct-drive system.
A. Coupler
C. Pulley
B. Clutch
D. None of these
A. Coupler
. The direct type of power transmission system has a transmission efficiency of:
A. 90%
C. 98%
B. 95%
D. 100%
D. 100%
A power transmission device used to deliver misaligned shaft.
A. Gears
C. Universal joint
B. Sprocket and chain
D. None of these
C. Universal joint
A machine element used to drive flat belts.
A. Sheave
C. Pulley
B. Sprocket
D. None of these
C. Pulley
A pulley that is used to tighten the belt of a drive system.
A. Flat pulley
C. V-pulley
B. Idler pulley
D. None of these
B. Idler pulley
Type of power transmission system where clutch action is possible:
A. Gears
C. Belt and pulley
B. Chain and sprocket
D. Direct coupling
C. Belt and pulley
A belt transmission suitable for cross-drive system.
A. V-belt
C. Flat belt
B. Timing v-belt
D. None of these
C. Flat belt
If the pulley to be driven requires to be turned in counterclockwise direction, what drive system would you recommend?
A. Open drive
C. Cross-drive
B. Quarter-turn drive
D. All of these
C. Cross-drive
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
C. Cross-drive
B. Quarter-turn drive
D. All of these
B. Quarter-turn drive
The drive used to run perpendicular shafts.
A. Open drive
C. Cross-drive
B. Quarter-turn drive
D. All of these
B. Quarter-turn drive
When buying flat belts, the common parameters used are:
A. Width and thickness
C. Width and weight
B. Width and ply number
D. None of these
B. Width and ply number
Designations for standard V-belt are:
A. A, B, C, D
C. AA-BB-CC-DD
B. HA, HB, HC, HD
D. None of these
A. A, B, C, D
A V-belt with B-32 specification means:
A. Type B with circumferential length of 32 inches
B. Standard type V-belt whose strength is 32 times stronger than type B
C. Type B with circumferential length of 32 cm
D. None of these
A. Type B with circumferential length of 32 inches
Which of the following V-belts is larger and stronger?
A. Type A
C. Type C
B. Type B
D. None of these
C. Type C
The commonly used V-belt in the Philippines for agricultural operations.
A. Type A
C. Type C
B. Type B
D. None of these
B. Type B
The power rating of Type-B V-belt.
A. 0.186 to 1.457 kW
C. 11.186 to 74.570 kW
B. 0.764 to 18.642 kW
D. None of these
B. 0.764 to 18.642 kW
Timing belt is commonly known as:
A. Conventional flat belts
C. Positive drive belts
B. Grooved belts
D. None of these
C. Positive drive belts
For variable-pitch sheaves, the recommended belts to be used are:
A. Double V-belt
C. Adjustable-speed belt
B. Timing V-belt
D. None of these
C. Adjustable-speed belt
A ribbed-type V-belt in which the ribs are positioned along the belt length.
A. V-ribbed belt
C. Timing belt
B. Cogged belt
D. None of these
A. V-ribbed belt
A ribbed-type V-belt in which the ribs are positioned across the belt length.
A. V-ribbed belt
C. Timing belt
B. Cogged belt
D. None of these
B. Cogged belt
Which is true about V-belt and pulley drive?
A. It cannot be used for long center distance drive
C. Efficiency drops with small pulley size
B. Its application is limited only for parallel drive
D. Excessive high load increases efficiency
C. Efficiency drops with small pulley size
Which of the following statement is true?
A. The velocity of the flat belt of a reaper is faster than its forward velocity
B. The velocity of the flat belt of a reaper is slower than its forward velocity
C. The velocity of the flat belt of a reaper is the same with the forward velocity
D. None of these
A. The velocity of the flat belt of a reaper is faster than its forward velocity
If some of the belts of a 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 them
C. All belts should be replaced
D. None of these
C. All belts should be replaced
They are endless belts made with single ply high tensile cords and they are oil and heat resistant.
A. Leather belts
C. Rubber belts
B. Synthetic belts
D. Nylon cords
D. Nylon cords
This type of transmission system is common to two-wheel tractors:
A. Direct coupling
C. Gear systems
B. Chain and sprockets
D. Differential
B. Chain and sprockets
Recommended chain and sprocket drive for tractor powered by 3.73 to 5.22 kW gasoline engine.
A. ANSI chain number 50
C. ANSI chain number 70
B. ANSI chain number 60
D. All of these
A. ANSI chain number 50
Recommended chain and sprocket drive for tractor powered by 5.22 kW and above gasoline engine.
A. ANSI chain number 50
C. ANSI chain number 70
B. ANSI chain number 60
D. All of these
B. ANSI chain number 60
The minimum size of chain for the transmission box of a walking-type hand tractor.
A. ANSI chain number 40
C. ANSI chain number 60
B. ANSI chain number 50
D. All of these
B. ANSI chain number 50
The length of chains is usually expressed in:
A. Inches
C. Pitches
B. Meters
D. All of these
C. Pitches
Chain size is usually specified in terms of:
A. Diameter of roller chain
C. Roller chain number
B. Length of chain
D. All of these
C. Roller chain number
The slack strand for chain with horizontal center should be located at the:
A. Upper side
C. Both sides
B. Lower side
D. None of these
B. Lower side
Which is not true about chains?
A. Adapted to long or short distances
B. A large reduction of speed can be obtained if desired
C. Size of sprocket and speed increases with the number of teeth
D. With a large number of teeth, the angle of rotation will be also large
D. With a large number of teeth, the angle of rotation will be also large
For slow-speed operation, the recommended number of teeth for driver sprocket is:
A. 11 teeth
C. 24 teeth
B. 16 teeth
D. None of these
B. 16 teeth
The recommended minimum number of sprocket teeth for high-speed operation.
A. 14-16 teeth
C. 28-30 teeth
B. 18-24 teeth
D. None of these
B. 18-24 teeth
Type of transmission system where the speed ratio depends on the teeth ratio of the two members:
A. Gears
C. Belt and pulley
B. Chain and sprocket
D. Both A and B
D. Both A and B
A drive suitable for counter clockwise direction of shafts:
A. Open drive belt
C. Gears
B. Chain and sprocket
D. All of these
C. Gears
Type of power transmission system where the center-to-center distance between shafts is dictated by the diameters of the members.
A. Direct coupling
C. Belt and pulley
B. Chain and sprocket
D. Gears
D. Gears
Gears are used for agricultural machinery because:
A. They are expensive and durable
B. They transmit high power and efficiency and with long service life
C. They have low operating and maintenance costs
D. None of these
B. They transmit high power and efficiency and with long service life
The most common type of gear used in agricultural machinery with straight and parallel teeth to the shaft axis.
A. Worm gear
C. Spur gear
B. Bevel gear
D. All of these
C. Spur gear
A type of gear commonly used for gear reducers or gear motors.
A. Worm gear
C. Spur gear
B. Bevel gear
D. None of these
A. Worm gear
A type of gear used for power-take off drive.
A. Worm gear
C. Spline shaft gear
B. Bevel gear
D. None of these
C. Spline shaft gear
A type of gear used to connect an implement shaft to the tractor PTO shaft.
A. Spur gear
C. Spline shaft gear
B. Bevel gear
D. None of these
C. Spline shaft gear
The smallest gears that are meshing together.
A. Spur
C. Pinion
B. Bevel
D. None of these
C. Pinion
A type of gear used to transmit rotational motion and power between parallel shafts.
A. Helical gear
C. Worm gear
B. Bevel gear
D. None of these
A. Helical gear
A type of gear used for intersecting shaft usually at right angles.
A. Spur gear
C. Worm gear
B. Bevel gear
D. None of these
B. Bevel gear
A type of gear used to transmit rotational motion and power between intersecting shafts.
A. Spur gear
C. Helical gear
B. Bevel gear
D. None of these
B. Bevel gear
The projecting part of a gear that comes in contact with the other gear resulting in an opposite direction.
A. Gear module
C. Gear pitch circle
B. Gear tooth
D. None of these
B. Gear tooth
The spacing of gear teeth which is measured along the pitch circle.
A. Addendum
C. Circular pitch
B. Dedendum
D. None of these
C. Circular pitch
It is used to fasten shaft pulleys and hubs of gears together.
A. Bolt
C. Keys
B. Springs
D. None of these
C. Keys
These are multiple keys in the general form of internal and external gear teeth, used to prevent relative rotation of cylindrically fitted machine parts?
A. Rigid couplings
C. Square splines
B. Involute splines
D. Friction clutches
B. Involute splines
Standard number of splines for PTO shaft.
A. 6 spline
C. 21 spline
B. 20 spline
D. All of these
D. All of these
Device that connects and disconnects power input to the power output.
A. Chain
C. Spring
B. Clutch
D. None of these
B. Clutch
It is a gripping device between power source.
A. Gears
C. Pulley
B. Clutch
D. None of these
B. Clutch
The type of clutch used to drive a machine element in only one direction.
A. Slip clutch
C. Friction clutch
B. Overrunning clutch
D. None of these
B. Overrunning clutch
The type of clutch that limits the amount of torque or power transmitted to the driven member through the shaft.
A. Slip clutch
C. Friction clutch
B. Overrunning clutch
D. None of these
A. Slip clutch
It is a metallic or synthetic lining for a hole which reduces or prevents abrasion between components of a machine.
A. Bearing
C. Gasket
B. Bushing
D. All of these
B. Bushing
A type of bearing used to restrain endwise motion of a turning shaft or withstand axial load.
A. Ball bearing
C. Roller bearing
B. Thrust bearing
D. None of these
B. Thrust bearing
A type of bearing with roller length at least 4 times than its diameter and is suitable for heavy load, oscillating and low speed.
A. Cylindrical roller bearing
C. Tapered roller bearing
B. Needle bearing
D. None of these
B. Needle bearing
A type of bearing suitable for heavy radial load and free from axial load.
A. Cylindrical roller bearing
C. Tapered roller bearing
B. Ball bearing
D. None of these
A. Cylindrical roller bearing
A type of bearing suitable for both radial and thrust loads:
A. Cylindrical roller bearing
C. Needle bearing
B. Ball bearing
D. None of these
B. Ball bearing
A type of bearing excellent for heavy radial load and moderate thrust load:
A. Spherical roller bearing
C. Tapered roller bearing
B. Ball bearing
D. None of these
C. Tapered roller bearing
A machine element used to keep castellated nut from loosening.
A. Roller pin
C. Both A and B
B. Cotter pin
D. None of these
B. Cotter pin
The identification of the given tire with its maximum recommended load when used in a specific type of
service.
A. Tire rating
C. Ply rating
B. Tire lug rating
D. All of these
C. Ply rating
The maximum tire inflation pressure for agricultural implements.
A. 40 psi
C. 100 psi
B. 60 psi
D. None of these
B. 60 psi