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Electrician
Electrician Set-1
Measuring
57

Measuring MCQ - Electrician (Set-1) with Answers

57) Moving coil instruments has "+ve and -ve" terminals. What is the colour of "+ve" terminal in moving coil instrument ?

Black

Blue

Red

Yellow

Answer is:

Red

Measuring MCQ - Electrician (Set-1) with Answers

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Related Measuring MCQ - Electrician (Set-1) with Answers

58) Shunts and multipliers used in moving coil instruments are made up of manganin. The reason for using the above material is that it has :

Positive temperature coefficient of resistance

Negative temperature coefficient of resistance

Perfectly constant temperature coefficient of resistance

Very low (practically constant) temperature coefficient of resistance

Answer is:

Very low (practically constant) temperature coefficient of resistance

59) Normally the scale of moving iron instruments will be :

initially crowded, gradually widen scale

initially widen, gradually crowded scale

have a uniform graduated scale

have a un-uniform graduated scale

Answer is:

have a un-uniform graduated scale

60) Moving iron instruments are used to measure both A.C. and D.C. quantities. What will happen if the terminals of a moving iron instrument are interchanged in D.C. circuit ?

It will give no deflection

It will indicate same reading

It will give full scale deflection

It will deflect in the reverse direction

Answer is:

It will indicate same reading

61) Instruments which must not be used in the circuit, when the power is ON are :

wattmeter and power factor meter

frequency meter and tong tester

phase sequence meter and energy meter

ohm meter and megger

Answer is:

ohm meter and megger

Measuring MCQ - Electrician (Set-1) with Answers

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