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391.

Ignition delay of low-speed engine:

A.	0.01 second	B.	0.002 second
C.	0.003 second	D.	0.004 second

392.

Starting motor consists of:

A.	Alternate current	B.	Direct current
C.	Both (a) & (b)	D.	None of these

393.

Starting motor is engaged with ring gear of engine with the help of:

A.	Bevel gear	B.	Helical gear
C.	Pinion gear	D.	Sliding pinion gear

394.

Alternator of a tractor engine is driven by:

A.	Gear system	B.	V-belt system
C.	Flat belt	D.	Chain sprocket

395.

Speed of alternator with respect to engine speed is:

A.	One-half	B.	Equal
C.	Twice	D.	Thrice

396.

Main function of fuel injection system is:

A.	To measure the correct amount of fuel as required by engine speed and load	B.	To maintain correct timing for beginning and end of injection
C.	To atomize the fuel in the cylinder	D.	All are correct

397.

Air injection system is mostly used in:

A.	Tractor's engines	B.	Petrol engines
C.	Heavy dusty stationary	D.	None of these

398.

In solid injection system, fuel pump is used for:

A.	Measure the quantity of fuel	B.	Forcing fuel into combustion chamber
C.	Metered the fuel	D.	All are correct

399.

In common rail system fuel is supplied by:

A.	One pressure line to all injectors	B.	Separate pressure line to all injectors
C.	Both (a) & (b)	D.	None of these

400.

In line system of injection, the pump used is:

A.	Constant stroke type	B.	Lapped-plunger type
C.	Both (a) & (b)	D.	None of these