Power Transmission

Question 1

What is the main function of a coupling in a machine?
a) Transmit torque between two shafts
b) Reduce vibration
c) Align pulleys
d) Secure bearings

Answer 1

a) Transmit torque between two shafts

Question 2

Which tool is used to check the flatness of a surface?
a) Dial indicator
b) Feeler gauge
c) Straight edge
d) Torque wrench

Answer 2

c) Straight edge

Question 3

What is the purpose of a key in a shaft-key assembly?
a) To provide axial movement
b) To secure components to the shaft
c) To align the shaft
d) To prevent belt slippage

Answer 3

b) To secure components to the shaft

Question 4

What is the primary purpose of lubrication in a mechanical system?
a) Increase heat generation
b) Reduce friction and wear
c) Secure fasteners
d) Align components

Answer 4

b) Reduce friction and wear

Question 5

Which type of bearing is best suited for radial loads?
a) Ball bearing
b) Thrust bearing
c) Roller bearing
d) Sleeve bearing

Answer 5

c) Roller bearing

Question 6

What is the function of a torque wrench?
a) Measure the tension in a belt
b) Tighten bolts to a specific torque
c) Check the flatness of a surface
d) Measure electrical current

Answer 6

b) Tighten bolts to a specific torque

Question 7

Which component reduces friction between moving parts in a machine?
a) Bearing
b) Gear
c) Pulley
d) Coupling

Answer 7

a) Bearing

Question 8

What is the purpose of a V-belt in a pulley system?
a) To increase friction between the pulley and the belt
b) To transfer rotational motion and power
c) To prevent slippage under load
d) Both b and c

Answer 8

d) Both b and c

Question 9

When installing a conveyor belt, what is the first step?
a) Tensioning the belt
b) Aligning the pulleys
c) Turning off the power to the system
d) Measuring the length of the belt

Answer 9

c) Turning off the power to the system

Question 10

What is the correct way to tension a conveyor belt?
a) Tighten until the belt no longer moves
b) Follow the manufacturer’s specifications
c) Leave it slightly loose
d) Over-tighten to ensure no slippage

Answer 10

b) Follow the manufacturer’s specifications

Question 11

What is the primary purpose of tracking a conveyor belt?
a) Ensure the belt runs in the center of the system
b) Increase belt speed
c) Reduce friction
d) Align the motor with the pulleys

Answer 11

a) Ensure the belt runs in the center of the system

Question 12

Which tool is commonly used to splice a conveyor belt?
a) Belt cutter
b) Clamping press
c) Screwdriver
d) Welding torch

Answer 12

b) Clamping press

Question 13

How often should conveyor belts be inspected for wear and tear?
a) Monthly
b) Weekly
c) Daily
d) According to the manufacturer’s recommendations

Answer 13

d) According to the manufacturer’s recommendations

Question 14

What is the purpose of a gear in a power transmission system?
a) Transmit torque and change speed
b) Reduce friction
c) Increase vibration
d) Align shafts

Answer 14

a) Transmit torque and change speed

Question 15

What type of drive system uses chains and sprockets?
a) Belt drive
b) Chain drive
c) Gear drive
d) Friction drive

Answer 15

b) Chain drive

Question 16

What is the advantage of using a belt drive system?
a) Quiet operation
b) Absorption of shock loads
c) Easy maintenance
d) All of the above

Answer 16

d) All of the above

Question 17

What does the term “gear ratio” refer to?
a) The speed of the output gear
b) The number of teeth on the input gear divided by the output gear
c) The size of the gear
d) The torque applied to the system

Answer 17

b) The number of teeth on the input gear divided by the output gear

Question 18

Which type of coupling compensates for angular misalignment?
a) Rigid coupling
b) Flexible coupling
c) Flange coupling
d) Sleeve coupling

Answer 18

b) Flexible coupling

Question 19

What is the purpose of a tensioner in a belt drive system?
a) Maintain proper belt tension
b) Reduce belt speed
c) Increase belt lifespan
d) Both a and c

Answer 19

d) Both a and c

Question 20

What is the function of a clutch in a power transmission system?
a) Disconnect power when needed
b) Increase torque
c) Reduce vibration
d) Align shafts

Answer 20

a) Disconnect power when needed

Question 21

Which component is used to change the direction of rotation in a power transmission system?
a) Gearbox
b) Pulley
c) Chain
d) Bearing

Answer 21

a) Gearbox

Question 22

What type of belt is commonly used in high-torque applications?
a) Flat belt
b) V-belt
c) Timing belt
d) Ribbed belt

Answer 22

c) Timing belt

Question 23

What is the primary purpose of an oil seal in machinery?
a) Prevent oil leaks and contamination
b) Increase pressure in the system
c) Lubricate moving parts
d) Secure components in place

Answer 23

a) Prevent oil leaks and contamination

Question 24

What is the main purpose of a thrust bearing?
a) Reduce radial load
b) Support axial load
c) Maintain alignment of a shaft
d) Provide lubrication

Answer 24

b) Support axial load

Question 25

What does the term “pitch” refer to in a screw thread?
a) The angle of the thread
b) The distance between threads
c) The diameter of the screw
d) The material of the screw

Answer 25

b) The distance between threads

Question 26

Which component is used to align shafts in a power transmission system?
a) Coupling
b) Bearing
c) Gear
d) Pulley

Answer 26

a) Coupling

Question 27

Which type of chain is commonly used in heavy-duty power transmission systems?
a) Roller chain
b) Leaf chain
c) Silent chain
d) Conveyor chain

Answer 27

a) Roller chain

Question 28

Which lubricant is commonly used in high-load, low-speed applications?
a) Graphite-based grease
b) Silicone oil
c) Mineral oil
d) Lithium-based grease

Answer 28

a) Graphite-based grease

Question 29

What is the purpose of a tensioner in a chain drive system?
a) Prevent chain slippage
b) Align sprockets
c) Maintain proper chain tension
d) Reduce vibration

Answer 29

c) Maintain proper chain tension

Question 30

What is the purpose of a chain guard in a power transmission system?
a) Reduce noise
b) Protect personnel from moving parts
c) Prevent chain slippage
d) Increase chain lifespan

Answer 30

b) Protect personnel from moving parts

Question 31

What is the primary cause of belt slippage in a pulley system?
a) Excessive tension
b) Misalignment of pulleys
c) Worn-out bearings
d) High belt speed

Answer 31

b) Misalignment of pulleys

Question 32

What type of bearing is designed to support axial loads?
a) Roller bearing
b) Ball bearing
c) Thrust bearing
d) Sleeve bearing

Answer 32

c) Thrust bearing

Question 33

What is the main function of a sprocket in a chain drive system?
a) Transmit torque and rotation
b) Align chains
c) Increase chain speed
d) Reduce friction

Answer 33

a) Transmit torque and rotation

Question 34

Which tool is used to check the alignment of a belt drive system? a) Straight edge
b) Dial indicator
c) Laser alignment tool
d) Feeler gauge

Answer 34

c) Laser alignment tool

Question 35

Which type of coupling allows for slight misalignment between two shafts?
a) Rigid coupling
b) Flexible coupling
c) Magnetic coupling
d) Gear coupling

Answer 35

b) Flexible coupling

Question 36

What is the most common method of applying grease to bearings? a) Drip lubrication
b) Oil mist lubrication
c) Grease gun
d) Splash lubrication

Answer 36

c) Grease gun

Question 37

What is the primary advantage of a toothed belt over a V-belt?
a) Greater flexibility
b) Better grip and no slippage
c) Higher cost-effectiveness
d) Increased lubrication needs

Answer 37

b) Better grip and no slippage

Question 38

Which tool is used to check belt tension in a pulley system?
a) Torque wrench
b) Belt tension gauge
c) Dial indicator
d) Feeler gauge

Answer 38

b) Belt tension gauge

Question 39

What is the main reason for chain elongation over time?
a) Chain lubrication
b) Wear on the pins and bushings
c) Excessive chain tension
d) Misalignment of sprockets

Answer 39

b) Wear on the pins and bushings

Question 40

What happens if a conveyor belt is over-tensioned?
a) It increases belt lifespan
b) It reduces belt slippage
c) It causes premature wear and possible belt failure
d) It increases energy efficiency

Answer 40

c) It causes premature wear and possible belt failure

Question 41

Which component is used to connect two shafts and transmit torque without backlash?
a) Flexible coupling
b) Rigid coupling
c) Chain drive
d) Gearbox

Answer 41

b) Rigid coupling

Question 42

What is the function of an idler pulley in a belt drive system?
a) Reduce friction
b) Adjust belt tension and guide the belt
c) Increase power transmission efficiency
d) Act as a primary driver

Answer 42

b) Adjust belt tension and guide the belt

Question 43

Which tool is used to check chain wear in a drive system?
a) Caliper
b) Chain wear gauge
c) Torque wrench
d) Feeler gauge

Answer 43

b) Chain wear gauge

Question 44

What is the main advantage of a chain drive over a belt drive?
a) Lower maintenance requirements
b) Ability to transmit higher torque
c) Greater flexibility
d) Reduced noise

Answer 44

b) Ability to transmit higher torque

Question 45

What is the purpose of a shear pin in a power transmission system?
a) Act as a torque limiter to prevent damage
b) Align shafts
c) Secure gears in place
d) Increase transmission speed

Answer 45

a) Act as a torque limiter to prevent damage

Question 46

What is the function of a belt guard in a drive system?
a) Align the belt
b) Protect personnel from moving parts
c) Reduce belt wear
d) Increase belt tension

Answer 46

b) Protect personnel from moving parts

Question 47

What happens if a chain is improperly aligned with the sprockets? a) Increased chain life
b) Reduced wear on sprockets
c) Increased vibration and noise
d) Enhanced power transmission efficiency

Answer 47

c) Increased vibration and noise