Electrical Engineering MCQs

Page No. 70

The pointer of an indicating instrument should be______________?


avery light

✓


bvery heavy

✖


ceither A. or B

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d neither A. nor B.

✖


View Answer very light

Which of the following meters are not used on D.C. circuits______________?


aMercury motor meters

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bCommutator motor meters

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c Induction meters

✓


dNone of the above

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View Answer Induction meters

In a portable instrument, the controlling torque is provided by_____________?


aspring

✓


bgravity

✖


ceddy currents

✖


d all of the above

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View Answer spring

In majority of instruments damping is provided by______________?


afluid friction

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bspring

✖


ceddy currents

✓


dall of the above

✖


View Answer eddy currents

The disc of an instrument using eddy current damping should be of________________?


aconducting and magnetic material

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bnon-conducting and magnetic material

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cconducting and non-magnetic material

✓


dnone of the above

✖



The function of shunt in an ammeter is to______________?


aby pass the current

✓


bincrease the sensitivity of the ammeter

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cincrease the resistance of ammeter

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dnone of the above

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View Answer by pass the current

A potentiometer may be used for_________________?


ameasurement of resistance

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bmeasurement of current

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ccalibration of ammeter

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dall of the above

✓


View Answer all of the above

The chemical effect of current is used in ______________?


aD.C. ammeter hour meter

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bD.C. ammeter

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c D.C. energy meter

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dnone of the above

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For handling greater currents induction wattmeters are used in conjunction with______________?


apotential transformers

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bcurrent transformers

✓


cpower transformers

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d either of the above

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View Answer current transformers

is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another_______________?


a Tangent galvanometer

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bMeggar

✓


cCurrent transformer

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dNone of the above

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View Answer Meggar

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