I.C. ENGINE OBJECTIVE QUESTIONS

I.C. Engine Objective Questions

1. In a four stroke engine the working cycle is completed in

A. One revolution of crankshaft
B. Two revolutions of crankshaft
C. Three revolution of crankshaft
d. Four revolutions of crankshaft

2. A two stroke cycle engine gives ..........the no of power strokes as compared to four stroke cycle engine at the same engine speed.

A. Half
B. Same
C. Double
D. Four times

3. In a four stroke cycle engine the sequence of operations is

A. Suction compression expansion exhaust
B. Suction expansion compression exhaust
C. Expansion compression suction exhaust
D. Compression expansion suction exhaust

4. In a four stroke cycle petrol engine the pressure inside the engine cyxlinder during the suction stroke is ..............the atmospheric pressure.

A. Above
B. Below
C. Equal
D. None

5. The theoretically correct mixture of air and petrol is

A. 10:1
B. 15:1
C. 20:1
D. 25:1

6. Stoichiometric ratio is

A. Chemically correct air fuel ratio by weight
B. Chemically correct air fuel ratio by volume
C. Actual air fuel ratio for maximum efficiency
D. None

7. During idling a petrol engine requires which type of mixture?

A. Lean
B. Rich
C. Chemically correct
D. Chemically incorrect

8. In a petrol engine the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a

A. Fuel pump
B. Fuel injector
C. Spark plug
D. None of these

9. In a petrol engine if diesel is used then the engine will

A. Not run
B. Run more efficiently
C. Run at high speed
D. Explode

10. A diesel engine has

A. One valve
B. Two valve
C. Three valves
D. Four valves