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31.

In four-stroke cycle engine, one power stroke is obtained after every:

A.	Half revolution of crankshaft	B.	One revolution of crankshaft
C.	Two revolution of crankshaft	D.	Three revolution of crankshaft

32.

The carburetor of an engine is used to mix fuel with:

A.	Air	B.	Water
C.	Oil	D.	None of these

33.

The firing order of 4-stroke 4-cylinder engine is:

A.	1-3-2-4	B.	1-3-4-2
C.	1-4-3-2	D.	1-2-3-4

34.

The firing order of 4 strokes 6 cylinder engine is:

A.	1-5-3-6-2-4	B.	1-3-4-2-6-5
C.	1-3-2-5-4-6	D.	1-3-5-6-4-2

35.

The firing interval of 2-stroke two-cylinder engine is:

A.	180	B.	360
C.	120	D.	720

36.

The firing interval of 2-strike two-cylinder engine is:

A.	90	B.	180
C.	360	D.	720

37.

The compression ratio of diesel engine is:

A.	4 to 8:1	B.	14 to 20:1
C.	4 to 1:1	D.	14 to 22:1

38.

The compression ratio of petrol engine is:

A.	4 to 8:1	B.	4 to 10:1
C.	8 to 15:1	D.	14 to 2:1

39.

The air fuel ratio of diesel engine is:

A.	8:01	B.	15:01
C.	20:01	D.	None of these

40.

The air fuel ratio of petrol engine is:

A.	10;1	B.	15;1
C.	20;1	D.	None of these