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41.

The surface hardness that can be obtained by nitriding is generally in the range

42.

For traction applications, the type of motor best suited is

43.

Dielectric strength of a material is

A.	Capacity to take variable stresses	B.	Magnetic property
C.	Capacity to withstand high voltage	D.	Capacity to resist flow of current
E.	Energy storage capacity

44.

Monel metal is

45.

The loss of strength in compression which occurs when there is a gain in strength in the tension due to overloading is

46.

Acoustical materials

47.

A concrete wall generally

48.

An induction motor meant for operation on 60 cycles per second is connected to a supply having 50 cycles per second. What will happen

A.	The motor will not start	B.	The motor will get burnt
C.	The motor will run with peculiar noise	D.	The operating speed of the motor will be less than the rated
E.	The motor will not take load

49.

In an extra humid atmosphere which one of the following motor would you select?

50.

A starter in automobile is generally