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601.

The colour of positive plate of a lead-acid battery is:

A.	White	B.	Grey
C.	Brown	D.	Black

602.

The colour of negative plate of lead acid battery is:

A.	Black	B.	Grey
C.	White	D.	Brown

603.

Positive plate of lead-acid battery is made of:

A.	PbO2	B.	Pb
C.	PbSO4	D.	H2SO4

604.

Negative plate of lead-acid battery is made of:

A.	PbSO4	B.	H2SO4
C.	PbO2	D.	Pb

605.

In an alternator the magnetic field is produced in the:

A.	Frame	B.	Stator
C.	Regulator	D.	Rotar

606.

The number of winding in the stator of alternator is:

A.	1	B.	2
C.	3	D.	4

607.

The output of an alternator is controlled by:

A.	Current regulator	B.	Voltage regulator
C.	Cutout device	D.	All are correct

608.

The ratio of output power to input power for a traction device is called:

A.	Mechanical efficiency	B.	Thermal efficiency
C.	Tractive efficiency	D.	None of these

609.

Ratio of net pull produced for the dynamic normal load on traction device is called:

A.	Tractive force	B.	Traction constant
C.	Net traction coefficient	D.	All are correct

610.

In 4WD tractors power occurs in:

A.	Both front wheels	B.	Both rear wheels
C.	One front and one rear wheel	D.	All four wheels