Mechanical Engineering - Automobile Engineering

26. 

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

Answer: Option D

Explanation:

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27. 

The advantage of double-wishbone suspension design is that a large amount of freedom is available for setting geometry and precise settings can be made for driving comfort and steerability,

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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28. 

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

Answer: Option D

Explanation:

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29. 

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

Answer: Option A

Explanation:

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30. 

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

Answer: Option C

Explanation:

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