Automobile Engineering Questions & Answers - Page 5

21.

If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called

A.

detonation

B.

ignition

C.

pre-ignition

D.

rumble

Correct answer is C

No explanation has been provided for this answer.

22.

If the level of tension in the belt is too high, it can result in a loss of power or in bending of the rotating shaft or crankshaft.

A.

Correct

B.

Incorrect

C.

Cannot say

D.

Tension in the belt can never be too high

Correct answer is A

No explanation has been provided for this answer.

23.

The co-efficient of rolling resistance for a truck weighing 63 500 N is 0.018. The rolling resistance to the truck is

A.

1.143 N

B.

11.43 N

C.

114.3 N

D.

1143 N

Correct answer is D

No explanation has been provided for this answer.

25.

If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

A.

17:1

B.

15:1

C.

13:1

D.

10:1

Correct answer is D

No explanation has been provided for this answer.