Question

1. The temperature indicating instrument in vehicles indicates the temperature of

(A) Engine piston

(B) Engine cylinder

(C) Lubricating oil

(D) Jacket cooling water

2. The motion of the cam is transferred to the valves through



Piston

Rocker arms

Camshaft pulley

Valve stems

3. The power actually developed inside the engine cylinder is called as



(A) Indicated power

(B) Brake power

(C) Frictional power

(D) None of these

4. If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about



17:1

15:1

13:1

10:1

5. Petrol that detonates easily is called



High octane petrol

Low octane petrol

Unleaded petrol

Blended fuel



6. The calorific value of Diesel is about



36.5 MJ/kg

38.5 MJ/kg

42.5 MJ/kg

45.5 MJ/kg



7. The function of oil control rings is that it



(A) Lubricates the cylinder wall by releasing oil from its hole

(B) Keeps the cylinder wall lubricated by holding oil in its channel

(C) Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan

(D) Maintains a seal and prevents escape of burned gases and oil leakage

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Answer 1

Answer:

1-d

2-b

3-a

4-d

5-a

6-d

7-c