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31.

In a digital instrument "over ranging" means

A.	Only three digits are switched on	B.	All digits indicte reading of 8
C.	Parameter being measured is varying constantly	D.	Half digit is switched off
E.	Half digit is switched on

32.

Meter accuracy is determined by

A.	Full scale deflection	B.	Half scale deflection
C.	One fourth scale deflection	D.	Least reading possible on the scale
E.	Thickness of the pointer

33.

The static error bank of an instrument does not include

A.	Hysteresis in the instrument	B.	Electrical draft
C.	Non-linearity	D.	All of the above
E.	None of the above

34.

A temperature sensitive transducer is subjected to a sudden temperature change. It takes 18 seconds for the transducer to reach equilibrium condition (five times constant). The time taken by the transducer to read half of the temperature difference will be nearly

A.	0.35 second	B.	0.69 second
C.	0.99 second	D.	1.38 second
E.	3.92 second

35.

Which of the following magnetic material has least value of (B.H.)max?

A.	Carbon steel	B.	Cobalt steel
C.	Alnico	D.	Alcomax

36.

Which of the following magnetic material has highest coercive force?

A.	Carbon steel	B.	Dead mild steel
C.	Tungsten steel	D.	Cobalt steel
E.	Alcomax

37.

Manganin does not contain

A.	Zinc	B.	Copper
C.	Manganese	D.	Nickel
E.	All of the above

38.

Constantan is an alloy of

A.	Nickel and copper	B.	Nickel and silver
C.	Lead and zind	D.	Aluminium and zinc
E.	Aluminium and copper

39.

1 watt is the same as

A.	103 ergs/s	B.	1010 ergs/s
C.	105 ergs/s	D.	106 ergs/s
E.	107 ergs/s

40.

1 Joule is equal to

A.	1012 ergs	B.	1010 ergs
C.	109 ergs	D.	107 ergs
E.	105 ergs