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321.

The device which is used for atomising and vapourising the petrol fuel and mixing it with the air in varying proportions, to suit the changing operating conditions of the engine, is known as

A.	injector	B.	Spark plug
C.	carburettor	D.	none of the above

322.

The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as

A.	supercharging	B.	auto-ignition
C.	scavenging	D.	none of the above

323.

Magneto ignition system is used in

A.	S.I. engines	B.	C.I. engines
C.	Steam engines	D.	none of the above

324.

Diesel engines are also known as

A.	S.I. engines	B.	C.I. engines
C.	Steam engines	D.	none of the above

325.

The power developed in four stroke I.C. engine, for the same engine speed and cylinder volume, as compared to that of a two stroke engine is

A.	two times	B.	equal
C.	one half	D.	none of the above

326.

In actual practice, the exhaust value of a four stroke I.C. engine should close

A.	exactly at the end of expansion stroke	B.	slightly before the end of exhaust stroke
C.	slightly after the end of exhaust stroke	D.	none of the above

327.

In case of Diesel engines into the engine cylinder during suction stroke

A.	air and fuel is drawn	B.	only fuel is drawn
C.	only air is drawn	D.	none of the above

328.

If the cut-off is decreased, the efficiency of Diesel cycle

A.	is equal to Otto cycle	B.	is more than Otto cycle
C.	is less than Otto cycle	D.	approaches to Otto cycle

329.

The knocking in S.I. engines can be prevented if the end mixture is having

A.	high density	B.	medium density
C.	low density	D.	none of the above

330.

The firing order in case of four cylinder I.C. engine is given as

A.	1-2-3-4	B.	1-4-3-2
C.	1-2-4-3	D.	none of the above