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Objective Questions
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Electrician
Electrician Set-1
Measuring
59

Measuring MCQ - Electrician (Set-1) with Answers

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

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

62) A house has 4 kW connected loads and is fed by single phase supply. What range energy meter is recommended for the house ?

20 amperes

15 amperes

30 amperes

10 amperes

Answer is:

30 amperes

63) In an induction type energy meter, the speed of rotation of the aluminium disc is proportional to the :

current flowing through the load

square of the current in the current coil

the voltage applied to the pressure coil

the current in the current coil and voltage in the pressure coil

Answer is:

the current in the current coil and voltage in the pressure coil

Measuring MCQ - Electrician (Set-1) with Answers

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