Power Transmission Systems: Types and Applications

Question 1

Which of the following is NOT a common material used for manufacturing gears?

Accepted Answer

Nylon

Answer

Steel

Answer

Cast iron

Answer

Aluminium

Question 2

What is the primary purpose of a shaft in a power transmission system?

Accepted Answer

To transmit torque

Answer

To change the direction of power flow

Answer

To store energy

Answer

To reduce friction

Question 3

Which type of belt is typically most suitable for transmitting power in high-speed applications?

Accepted Answer

Timing belt

Answer

Flat belt

Answer

V-belt

Answer

Chain

Question 4

What is the purpose of a keyway in a shaft?

Accepted Answer

To connect the shaft to a pulley or gear

Answer

To prevent the shaft from rotating

Answer

To reduce friction between the shaft and bearings

Answer

To store lubricant

Question 5

Which of the following is NOT a type of lubrication used in power transmission systems?

Accepted Answer

Water

Answer

Oil bath

Answer

Grease

Answer

Dry lubrication

Question 6

Which of the following is NOT an advantage of using gears in power transmission systems?

Accepted Answer

Ability to transmit power over long distances

Answer

High efficiency

Answer

Slippage prevention

Answer

Low maintenance

Question 7

Which type of belt is best suited for high-speed applications with minimal slippage?

Accepted Answer

Timing belt

Answer

Flat belt

Answer

V-belt

Answer

Poly-V belt

Question 8

What is the primary purpose of a chain drive in power transmission systems?

Accepted Answer

To provide a high gear ratio and prevent slippage

Answer

To transmit power over extremely long distances

Answer

To reduce noise and vibration

Answer

To change the direction of rotation

Question 9

Which of the following is NOT a type of shaft coupling?

Accepted Answer

Chain coupling

Answer

Flexible coupling

Answer

Rigid coupling

Answer

Fluid coupling

Question 10

When selecting a power transmission system, which of the following factors is of utmost importance?

Accepted Answer

Application

Answer

Cost

Answer

Efficiency

Answer

Reliability

Question 11

What is the main advantage of using a differential in a power transmission system?

Accepted Answer

To provide a variable speed ratio and allow wheels to rotate at different speeds

Answer

To increase torque

Answer

To change the direction of rotation

Answer

To reduce noise

Question 12

Which of the following is NOT a factor that can affect the efficiency of a chain drive?

Accepted Answer

Belt width

Answer

Chain pitch

Answer

Chain lubrication

Answer

Chain tension

Question 13

What is the purpose of a clutch in a power transmission system?

Accepted Answer

To engage and disengage the power transmission smoothly

Answer

To change the speed ratio

Answer

To reduce torque

Answer

To alter the direction of rotation

Question 14

Which type of gear is specifically designed to transmit power between parallel shafts?

Accepted Answer

Spur gear

Answer

Bevel gear

Answer

Helical gear

Answer

Worm gear

Question 15

Which material is predominantly used in the manufacturing of chains for power transmission applications?

Accepted Answer

Carbon steel

Answer

Stainless steel

Answer

Aluminium

Answer

Cast iron

Question 16

Describe the main function of a shaft within a power transmission system.

Accepted Answer

Transmit torque and power

Answer

Provide support for the load

Answer

Reduce friction

Answer

Alter the direction of power flow

Question 17

Explain the purpose of utilizing a keyway in the context of a shaft-hub connection.

Accepted Answer

Prevent relative rotation between the hub and the shaft

Answer

Transmit torque effectively

Answer

Minimize stress concentrations on the shaft

Answer

Provide a reference point for alignment purposes

Question 18

How does the choice of bearings affect the efficiency and longevity of a power transmission system?

Accepted Answer

Reduces friction and wear

Answer

Increases operating speed

Answer

Makes the system more compact

Question 19

Which type of power transmission system is best suited for applications requiring high torque at low speeds?

Accepted Answer

Gears

Answer

Belts

Answer

Chains

Answer

Shafts

Question 20

What is the primary advantage of choosing chain drives over belt drives?

Accepted Answer

Enhanced efficiency and durability

Answer

Reduced maintenance requirements

Answer

Extended power transmission distances

Answer

Compact dimensions

Question 21

Which component of a gear train is responsible for altering the direction of rotation?

Accepted Answer

Idler gear

Answer

Pinion

Answer

Gear

Answer

Rack

Question 22

What is the primary purpose of a shaft collar?

Accepted Answer

Preventing axial movement of a shaft

Answer

Transmitting torque and power

Answer

Aligning shafts

Answer

Absorbing shock and vibration

Question 23

Which type of chain is best suited for applications where noise and vibration reduction are priorities?

Accepted Answer

Silent chain

Answer

Roller chain

Answer

Bush chain

Answer

Inverted tooth chain

Question 24

What primary factor determines the power rating of a shaft?

Accepted Answer

Material and diameter of the shaft

Answer

Speed of rotation

Answer

Length of the shaft

Answer

Bearing type

Question 25

Which type of gear train offers the highest mechanical advantage?

Accepted Answer

Epicyclic gear train

Answer

Simple gear train

Answer

Compound gear train

Answer

Reverted gear train

Question 26

What is the primary function of a universal joint in a power transmission system?

Accepted Answer

Transmitting torque at varying angles

Answer

Reducing vibration

Answer

Increasing speed

Answer

Changing the direction of rotation

Question 27

Discuss the critical factors that impact the lifespan of a chain in a power transmission system and elaborate on the associated maintenance practices.

Accepted Answer

Material composition, lubrication, operating conditions, chain tension, and alignment.

Answer

Chain length and pitch solely.

Answer

Chain tension and alignment exclusively.

Answer

Chain manufacturer and warranty alone.

Question 28

In high-speed applications where precise motion control is critical, which power transmission system is most suitable?

Accepted Answer

Gears

Answer

Shafts

Answer

Chains

Answer

Belts

Question 29

Which primary benefit is associated with utilizing belts in a power transmission system?

Accepted Answer

Smooth and quiet operation

Answer

High efficiency

Answer

High torque capacity

Question 30

In a power transmission system using gears, what is the primary function of the gear ratio?

Accepted Answer

To alter the speed and torque of the driven shaft

Answer

To reduce noise generated by the system

Answer

To enhance the system's efficiency

Answer

To prevent slippage between gears

Question 31

Among the various shaft couplings, which type is specifically designed to accommodate misalignment between shafts?

Accepted Answer

Flexible coupling

Answer

Rigid coupling

Answer

Chain coupling

Answer

Jaw coupling

Question 32

In a belt drive system, what is the primary purpose of a belt tensioner?

Accepted Answer

To maintain optimal belt tension

Answer

To increase belt speed

Answer

To prevent belt slippage

Answer

To reduce belt noise

Question 33

Which of the following represents a type of chain drive?

Accepted Answer

Roller chain

Answer

V-belt

Answer

Timing belt

Answer

Flat belt

Question 34

What is the primary distinction between a spur gear and a helical gear?

Accepted Answer

The orientation of the teeth

Answer

The material of the teeth

Answer

The number of teeth

Answer

The size of the teeth

Question 35

In a power transmission system, what is the fundamental purpose of a clutch?

Accepted Answer

To engage and disengage power transmission without halting the motor

Answer

To enhance power transmission speed

Answer

To reduce noise generated by power transmission

Question 36

Which type of power transmission system offers the most compact size and highest efficiency?

Accepted Answer

Gear drive

Answer

Belt drive

Answer

Shaft drive

Answer

Chain drive

Question 37

When selecting a chain for a power transmission system, which characteristic is the most important to consider?

Accepted Answer

Load capacity

Answer

Pitch

Answer

Length

Answer

Material

Question 38

Which type of shaft is best suited for transmitting torque in a single direction?

Accepted Answer

Solid shaft

Answer

Stepped shaft

Answer

Flexible shaft

Answer

Hollow shaft

Question 39

What is the primary function of a key in a power transmission system?

Accepted Answer

Preventing relative rotation between the shaft and the hub

Answer

Aligning the shaft and the hub

Answer

Transmitting torque

Question 40

Which material is commonly used in the manufacturing of gears?

Accepted Answer

Steel

Answer

Plastic

Answer

Rubber

Answer

Aluminium

Question 41

What is the primary purpose of lubrication in a power transmission system?

Accepted Answer

Reducing friction and wear

Answer

Improving efficiency

Answer

Increasing torque

Answer

Preventing corrosion

Question 42

Which type of chain exhibits the highest resistance to corrosion?

Accepted Answer

Stainless steel chain

Answer

Carbon steel chain

Answer

Alloy steel chain

Answer

Mild steel chain