Automobile Engineering MCQs

Question 1

The Diesel engines as compared to petrol engines require

Accepted Answer

Bigger flywheel

Answer

Smaller flywheel

Answer

Same size of flywheel

Answer

No flywheel

Question 2

The cetane number of a Diesel fuel is a measure of

Accepted Answer

Ignition quality

Answer

Volatility

Answer

Viscosity

Answer

Delay period

Question 3

The sequence in which the force is transmitted through a brake system when the brake pedal is depressed is

Accepted Answer

Brake pedal, vacuum servo mechanism, master cylinder, brake lines, brake pads

Answer

Brake pedal, master cylinder, brake lines, vacuum servo mechanism, brake pads

Answer

Brake pedal, master cylinder, vacuum servo mechanism, brake lines, brake pads

Answer

Brake pedal, brake lines, vacuum servo mechanism, master cylinder, brake pads

Question 4

The main purpose of an engine's air cleaner is that it

Accepted Answer

Prevents dust and other foreign matter from entering the engine

Answer

Controls the engine's air intake volume

Answer

Reduces the engine's air intake noise

Answer

Prevents rain water from entering the engine

Question 5

It is necessary to maintain the valve clearances as they

Accepted Answer

Allow for lengthening of the valves owing to the heat of combustion

Answer

Reduce the resistance to sliding that occurs between the cam and the tappet

Answer

Increase the speed at which the valves move up and down

Answer

Make the crankshaft turn smoothly

Question 6

The component of the oil filter that prevents the passage of metal particles and sludge is

Accepted Answer

Element

Answer

Relief valve

Answer

Check valve

Answer

Case

Question 7

The characteristic that is enhanced by the use of cylinder sleeves is

Accepted Answer

Resistance to wear

Answer

Cooling efficiency

Answer

Lubrication performance

Answer

None of these

Question 8

The material generally used for cylinder sleeves is

Accepted Answer

Cast iron

Answer

Aluminium

Answer

Ceramic

Answer

Fibre reinforced plastic

Question 9

The purpose of a thermostat in an engine cooling system is to

Accepted Answer

Allow the engine to warm up quickly

Answer

Prevent the coolant from boiling

Answer

Indicate the coolant temperature

Answer

Pressurise the system to raise the boiling point