Automobile Engineering MCQs

Question 1

The self ignition temperature of Diesel as compared to petrol is

Accepted Answer

Lower

Answer

Higher

Answer

Same

Answer

Depends on fuel quality

Question 2

A laminated glass upon cracking

Accepted Answer

Sandwiched layer traps the fragments

Answer

Bursts into sharp edged fragments

Answer

Bursts into granular pieces

Answer

Breaks into the form of crystals

Question 3

Highest useful compression ratio (HUCR) is the highest compression ratio at which the

Accepted Answer

Fuel can be used in a test engine without knocking

Answer

Engine can run

Answer

Engine gives maximum output

Answer

Engine is most efficient

Question 4

When the battery is half (50%) charged, the specific gravity of acid in a battery is usually

Accepted Answer

1.19

Answer

0.74

Answer

1

Answer

1.12

Question 5

The main task of a battery in automobiles is to

Accepted Answer

Supply a large amount of power to turn the starter motor when the engine is being started

Answer

Supply electricity to the alternator

Answer

Act as a reservoir or stabilizer of electricity

Answer

Supply electricity to the vehicle's electrical system at all times while the engine is running

Question 6

The function of a governor in automobiles is to

Accepted Answer

Limit the vehicle speed

Answer

Limit the power

Answer

Maintain constant engine speed

Answer

Maximise the fuel economy

Question 7

The basic purpose of tyre rotation on automobiles is to

Accepted Answer

Equalize wear

Answer

Avoid ply separation

Answer

Get better ride

Answer

None of these

Question 8

The vehicle ride will be comfortable if

Accepted Answer

Unsprung mass is kept minimum

Answer

Sprang mass is kept minimum

Answer

Vehicle mass is kept minimum

Answer

All of these

Question 9

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

Accepted Answer

One half turn

Answer

One turn

Answer

Two turns

Answer

Four turns