IC Engines - Interview Questions | Exam2Win

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56. The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed

A. 80�C

B. 120�C

C. 180�C

D. 240�C

E. 320�C.

Explanation:

57. The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at

A. 1500 rpm

B. 750 rpm

C. 3000 rpm

D. any value independent of engine speed

E. none of the above.

Explanation:

58. Polymerisation is a chemical process in which molecules of a compound become

A. larger

B. slowed down

C. smaller

D. liquid

E. gaseous.

Explanation:

59. The fuel air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter as compared to clean filter will be

A. higher

B. lower

C. remain unaffected

D. unpredictable

E. none of the above.

Explanation:

60. Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads

A. the friction is high

B. the friction is unpredictable

C. the small difference in cooling water temperature or in internal friction has a disproportionate effect

D. the engine is rarely operated

E. none of the above.

Explanation: