IC Engines - Interview Questions | Exam2Win

Take a timed mock test specifically for IC Engines.

26. It the temperature of intake air in IC engines is lowered, then its efficiency will

A. increase

B. decrease

C. remain same

D. increase upto certain limit and then decrease

E. decrease upto certain limit and then in-crease.

Explanation:

27. Pick up the false statement

A. Thermal efficiency of diesel engine i about 34%

B. Theoretically correct mixture of air am petrol is approximately 15 : 1

C. High speed compression engines operate on dual combustion cycle

D. Diesel engines are compression ignition engines

E. S.I. engines are quality-governed engines.

Explanation:

28. The air requirement of a petrol engine during starting compared to theoretical required for complete combustion is

A. more

B. loss

C. same

D. may be more or less depending on engine capacity

E. unpredictable.

Explanation:

29. The rating of a diesel engine, with increase in air-intlet temperature, will

A. increase linearly

B. decrease linearly

C. increase parabolically

D. decrease parabolically

E. first decrease linearly and then increase parabolically.

Explanation:

30. In a typical medium speed, 4-stroke cycle diesel engine

A. fuel injection starts at 10� before to dead center and ends at 20� after tor dead center

B. fuel injection starts at top dead center and ends at 20� after top dead center

C. fuel injection starts at just before top dead center and ends just after top dead center

D. may start and end anywhere

E. none of the above.

Explanation: