Automobile Engine MCQs

Question 1

The actual volume of fresh charge taken into four stroke-petrol engine is

Accepted Answer

Less than stroke volume

Answer

Equal to stroke volume

Answer

Equal to stroke volume + clearance volume

Answer

Does not depend upon stroke volume

Question 2

Where is the overdrive located?

Accepted Answer

Between transmission and propeller shaft

Answer

Between transmission and engine

Answer

Between transmission and rear axle

Answer

Between transmission and differential

Question 3

What is the need of the universal joint?

Accepted Answer

To transfer torque at an angle

Answer

To change inclination

Answer

To bend sideways

Answer

To change length

Question 4

The thermal efficiency of petrol engines is about

Accepted Answer

30%

Answer

15%

Answer

50%

Answer

70%

Question 5

The main feature of Macpherson strut suspension is that

Accepted Answer

Nun vertical external forces are supported by the suspension arms

Answer

The vertical size of the suspension can be made more compact

Answer

The unsprung mass in lighter

Answer

The assembly is slightly more complicated in design

Question 6

For diesel fuels the pour point for special grade is-

Accepted Answer

6°C

Answer

20°C

Answer

100°C

Answer

106°C

Question 7

In the vacuum suspended system, the brakes are applied when

Accepted Answer

Atmospheric pressure is applied to one side of the diaphragm

Answer

Vacuum is applied to both sides of diaphragm

Answer

Atmospheric pressure is applied to both sides of the diaphragm

Answer

None of these

Question 8

In case of a four stroke diesel engine, the heat carried away by the exhaust gases will be around

Accepted Answer

20 - 35%

Answer

5 - 7%

Answer

7 - 10%

Answer

10 - 20%

Question 9

A fuel which has a higher itself ignition temperature

Accepted Answer

Detonates less

Answer

Helps detonation

Answer

Results in smooth burning of charge

Answer

Increase the rate of ignition