AUTOMOBILE ENGINEERING

What is the main function of a clutch?

• To transmit the engine power to the rear wheels without shock

• To exchange engine power for greater torque

• To provide reverse motion

• To regulate torque

What is the purpose of a differential in a vehicle?

• To regulate torque by selecting the appropriate speed range

• To provide reverse motion

• To balance the tractive effort with the sum of the various forces tending to oppose the motion

• To exchange engine power for greater torque

What is the advantage of a fluid flywheel over a torque converter?

• Torque multiplication unit 3:1 to 4:1

• Requires less maintenance and attention

• Serves as an automatic clutch

• No wear of moving parts

What is the main function of a gear box?

• To provide neutral position and disallow power flow to the rest of the transmission

• To transmit the engine power to the rear wheels without shock

• To exchange engine power for greater torque

• To regulate the vehicle speed at which maximum torque is available

What is the construction of a semi-floating axle?

• The bearing is located between the axle casing and the hub

• The weight being completely supported by the wheels and the axle casing

• The axle shaft carry only the driving torque

• The outer end is supported by a single bearing inside the axle casing

What is the main purpose of a propeller shaft?

• To transmit the drive from the transmission to the bevel pinion or worm of final drive in front engine, rear drive vehicle

• To exchange engine power for greater torque

• To provide reverse motion

• To transmit the engine power to the rear wheels without shock

What is the requirement of a clutch related to heat dissipation?

• The clutch should have suitable mechanism to damp vibrations and to eliminate noise produced during the power transmission

• The clutch should engage gradually to avoid sudden jerks

• The clutch should be dynamically balanced

• The clutch should be able to dissipate large amount of heat which is generated during the clutch operation due to friction

What is the advantage of a single plate clutch?

• The construction is very simple

• The plate is mounted on a hub which is splined from inside and thus free to slide on gear box shaft

• The driven member of the clutch should be made as light as possible

• The friction lining can be replaced as and when required

What is the working principle of a centrifugal clutch?

• The oil from the driving member is forced outward radially because of the centrifugal force

• The centrifugal force is used to apply pressure on clutch to keep in engaged position

• The pressure plate is moved to the right against the force of spring, releasing the friction plate

• The throw out bearing moves towards the flywheel, pressing the centre portion of the spring

What is the main function of a transmission system?

• To provide for the relative movement between the engine and the driving wheels due to flexing of the road springs

• To turn the drive round through 90 degrees

• To enable the driving wheels to be driven at different speeds

• To enable the engine to be disconnected from the road wheels