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51.

Power capacitors are used

A.	To improve electrical capacity	B.	To improve efficiency
C.	To reduce power factor	D.	To improve power factor
E.	None of the above

52.

The loading on a pinion gear is usually

53.

ERW pipes are

A.	Elastic reinforced wire	B.	Extra reinforcement welded
C.	Electrically resistance welded	D.	Electrically reinforced and welded
E.	None of the above

54.

Induction hardening of components in done

A.	To increase hardness at the centre	B.	To increase the hardness of the core
C.	To increase hardness uniformly	D.	To increase hardness on the surface only
E.	To increase hardness at a spot only

55.

Muntz metal contains

56.

Bush bearings

57.

A Babbitt is

A.	A eutcctic of iron and iron phosphide	B.	A gadget for measuring volume
C.	A measure of magnetic induction produced in a material	D.	Antimony bearing lead or tia alloy
E.	None of the above

58.

Steel balls for ball bearings are manufactured by

59.

Safety valve used on locomotive boilers is generally of

60.

Dead weight type safety valve is not used on locomotives because

A.	It is bulky	B.	It gives bad apparatus
C.	It is not reliable	D.	It is costly
E.	It is susceptible to vibratory forces