Measurement and Instruments Multiple Choice Questions & Answers Pdf - 1

Question: 1

The error caused by pressure coil inductance in a wattmeter is compensated by connecting a

(A) capacitor in series with the inductor in the pressure coil circuit

(B) capacitor across a part of a series inductor in the pressure coil circuit

(C) capacitor in series with the series resistance in the pressure coil circuit

(D) capacitor across a part of series resistance in the pressure coil circuit

Question: 2

Wilson compensation is used to

(A) reduce the ratio error of a potential transformer

(B) reduce the phase angle error of a potential transformer

(C) reduce the ratio error of a current transformer

(D) reduce the phase angle error of a current transformer

Question: 3

In an unshunted fluxmeter, the sensitivity is dependent upon

(A) resistance of neither the moving coil nor the search coil

(B) resistance of both the moving coil and the search coil

(C) resistance of the search coil

(D) resistance of moving coil

Question: 4

Swamping resistance is connected

(A) in series with meter and have high resistance temperature co-efficient in order to reduce errors in ammeter

(B) in series with the meter and have a negligible resistance co-efficient in order to reduce temperature errors in shunted ammeters

(C) in series with the shunt to reduce temperature error in shunted ammeters

(D) in series with the ammeters to reduce errors on account of friction

Question: 5

The accuracy of Kelvin’s double bridge for the measurement of low resistance is high because the bridge

(A) uses a null indicating galvanometer

(B) uses a low resistance link between standard and test resistances

(C) has medium value resistance in the ration arms

(D) use two pairs of resistance arms