IC Engines - Interview Questions | Exam2Win

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51. The size of inlet valve of.an engine in comparison to exhaust valve is

A. more

B. less

C. same

D. more/less depending on capacity of engine

E. varies from design to design.

Explanation:

52. A diesel engine as compared to petrol engine (both running ar rated load) is

A. more efficient

B. less efficient

C. equally efficient

D. unpredictable

E. other factors will decide it.

Explanation:

53. Flash point of fuel oil is

A. minimum temperature to which1 oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

B. temperature at which it solidifies or congeals

C. temperature at which it catches fire without external aid

D. indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off

E. none of the above.

Explanation:

54. In a typical medium speed 4 stroke cycle diesel engine

A. exhaust valve opens at 35� before bot-tom dead center and closes at 20� after top dead center

B. exhaust valve opens at bottom dead center and closes at top dead center

C. exhaust valve opens just after bottom dead center and closes just before top dead center

D. may open and close anywhere

E. none of the above is true.

Explanation:

55. Gaseous-fuel guarantees are based on

A. calorific value of oil

B. low heat value of oil

C. high heat value of oil

D. mean heat value of oil

E. all of the above.

Explanation:

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