Automobile Engineering MCQs

Question 1

The natural gas is compressed in a CNG cylinder at a pressure of

Accepted Answer

200 bar

Answer

220 bar

Answer

250 bar

Answer

300 bar

Question 2

The function of an alternator in an automobile is to

Accepted Answer

Continually recharges the battery

Answer

Supply electric power

Answer

Converts mechanical energy into electrical energy

Answer

Partly converts engine power into electric power

Question 3

The crankshaft of a typical inline four cylinder engine has ________ balance weights.

Accepted Answer

8

Answer

12

Answer

4

Answer

16

Question 4

In comparison with a radial tyre, one advantage of a bias ply tyre is

Accepted Answer

Smoother ride at low speeds

Answer

Longer life

Answer

Lower rolling resistance

Answer

None of these

Question 5

The power source for a brake booster is

Accepted Answer

The pressure difference between the atmospheric pressure and the vacuum pressure in the intake manifold

Answer

Exhaust manifold pressure

Answer

Electricity

Answer

Hydraulic pump

Question 6

The path taken by intake air is

Accepted Answer

Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders

Answer

Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders

Answer

Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders

Answer

Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders

Question 7

Petrol that detonates easily is called

Accepted Answer

Low octane petrol

Answer

High octane petrol

Answer

Unleaded petrol

Answer

Blended fuel

Question 8

The device for smoothening out the power impulses from the engine is called

Accepted Answer

Flywheel

Answer

Clutch

Answer

Differential

Answer

Torque converter

Question 9

The compression ratio of a petrol engine is nearly

Accepted Answer

8 : 1

Answer

4 : 1

Answer

15 : 1

Answer

20 : 1