measurement and instrumentation Mcqs
101. Which of the following devices may be used for extending the range of instruments ?
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A. All of the above

B. Shunts

C. Multipliers

D. Current transformers

E. Potential transformers

102. The pressure coil of a wattmeter should be connected on the supply side of the current coil when______________?
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A. load impedance is low

B. load impedance is high

C. supply voltage is low

D. none of the above

104. Which of the following devices should be used for accurate measurement of low D.C. voltage ?
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A. None of the above

B. Small range moving coil voltmeter

C. D.C. potentiometer

D. Small range thermocouple voltmeter

105. The multiplier and the meter coil in a voltmeter are in________________?
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A. parallel

B. series-parallel

C. series

D. none of the above

106. Damping of the Ballistic galvanometer is made small to_______________?
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A. make the system critically damped

B. get first deflection large

C. get minimum overshoot

D. make the system oscillatory

107. Basically a potentiometer is a device for________________?
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A. none of the above

B. comparing two voltages

C. measuring a current

D. comparing two currents

E. measuring a voltage

108. Commonly used instruments in power system measurement are_______________?
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A. induction

B. rectifier

C. electrostatic

D. moving coil or iron

110. The chemical effect of current is used in ______________?
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A. D.C. ammeter

B. none of the above

C. D.C. energy meter

D. D.C. ammeter hour meter