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421.

The term scavanging is generally associated with

422.

During detonation in a petrol engine

A.	The rate of speed variation is high	B.	The rate of exhaust discharge is high
C.	The rate of temperature rise is high	D.	The rate of pressure rise is high
E.	None of the above

423.

In a petrol engine as the speed increases

A.	The spark intensity has to be increased	B.	The spark intensity has to be reduced
C.	The spark has to be advanced	D.	The spark has to be retarded
E.	None of the above

424.

The chemical usually added for increasing the knock resistance of a petrol engine is

425.

A camshaft is not provided in case of

426.

In Ambassador car, the engine is

A.	Horizontal	B.	Constant speed type
C.	Air cooled and reciprocating engines	D.	Multi-cylinder type
E.	V-type

427.

In a diesel engine the inlet pressure is more than the atmospheric pressure. Therefore; it can be concluded that

428.

The supercharging of diesel engine is done mainly to

A.	Increase the speed	B.	Increase the power output
C.	Cool the engine	D.	Increase the life of the engine
E.	Reduce the cnoise from the engine

429.

In Eicher tractor the engine is

A.	Horizontal	B.	Air cooled
C.	Multi-cylinder type	D.	Low compression ratio petrol engine
E.	Constant speed engine

430.

The engine provided on scooters is generally