Automobile Engineering Practice Set-3

1. The main function of an exhaust muffler is the

Reduction of exhaust noise

Optimization of exhaust efficiency

Reduction of the exhaust gas volume

Reduction of nitrogen oxide in the exhaust gases

2. The clutch is located between the transmission and the

Differential

Propeller shaft

Engine

Rear axle

3. The engine oil level should be checked

While the engine is running at high idle speed

While the engine is running

Immediately after the ignition switch is turned off

A few minutes after the ignition switch is turned off

4. The main function of the tread pattern on tyre is that

The tread pattern protects the tyre's inner carcass from small stones and pieces of glass

The crests between the tread grooves absorb road noise

In wet conditions, the tread grooves expel water that is drawn between the tyre and road surface

The tread grooves pass air between the tyre and road surface, thereby preventing tyre from overheating

5. In automobiles G.V.W. refers to

Gross vehicle width

Gross vehicle weight

Gross vehicle wheel track

Gross vehicle wheel base

6. In a four stroke engine for each crankshaft revolution, the camshaft revolves

Two turns

One turn

One half turn

Four turns

7. The aluminium alloy is used in cylinder blocks because

It is lighter and has good heat dissipation characteristics

The piston is also made of aluminium alloy

Material cost is low

It does not require any cylinder liners

8. A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

Allows the steering wheel to be turned by a greater amount when steering

Makes the steering more responsive

Reduces the amount of kickback for large steering angles

Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion

9. The basic purpose of tyres is to

None of these

Grip the road and provide good traction

Act as brake

Substitute for springs

10. In Diesel engines, the duration between the time of injection and the time of ignition is called

Injection period

Spill cut-off

Ignition period

Delay period

Automobile Engineering Practice Set-3

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