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381.

Ignition temperature of IC engines varies from:

A.	300-500?C	B.	500-700?C
C.	500-900?C	D.	700-1000?C

382.

In battery ignition system, the ignition fails due to:

A.	Heavy speed of engine	B.	Heavy use
C.	Not proper setting of breaker point	D.	None of these

383.

The common type of battery used in IC engines is:

A.	Dry battery	B.	Lead acid battery
C.	Both (a) & (b)	D.	None of these

384.

Lead mid battery is generally used in:

A.	Tractors	B.	Aircraft
C.	Light Motors	D.	None of these

385.

Charge of battery is measured in terms of:

A.	Density of electrolyte	B.	Weight of electrolyte
C.	Specific gravity of electrolyte	D.	All are correct

386.

In lead acid battery, percentage of sulphuric acid is about:

A.	35%	B.	50%
C.	65%	D.	75%

387.

Capacity of battery is expressed in tenns of:

A.	Amp power	B.	Voltage
C.	Amp-hour	D.	None of these

388.

Ignition timing depends on:

A.	Engine speed	B.	Compression ratio
C.	Valve timing	D.	All are correct

389.

The period petween start of injection and ignition is called:

A.	Ignition period	B.	Injection time
C.	Ignition delay	D.	All are correct

390.

Ignition delay of high-speed engine should be about:

A.	0.01 second	B.	0.001 second
C.	0.0001 second	D.	None of these