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Electrician
Electrician Set-1
Measuring
55

Measuring MCQ - Electrician (Set-1) with Answers

55) Which part of the PMMC instrument produces eddy current damping ?

Moving coil

Aluminium former

Permanent magnet

Soft iron cylindrical core

Answer is:

Soft iron cylindrical core

Measuring MCQ - Electrician (Set-1) with Answers

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

56) Which material is used for shunt and multiplier to extend the range of moving coil meters ?

Phosphor bronze

Silver

Manganin

Nichrome

Answer is:

Manganin

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

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

Measuring MCQ - Electrician (Set-1) with Answers

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