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341.

In case of petrol 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

342.

The inlet value remains open approximately for

A.	160?	B.	180?
C.	190?	D.	235?

343.

Instead of values, ports are used in case of

A.	Petrol engine	B.	Diesel engine
C.	Four-stroke I.C. engines	D.	Two-stroke I.C. engines

344.

In case of a Petrol engine, the spark plug should produce the spark

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