A voltage of about 200 V dc can be measured - Measurements and Instrumentation

Electronics and Communication Engineering (ECE) : Measurements and Instrumentation - Quiz(MCQ)

A voltage of about 200 V dc can be measured

directly by dc potentiometer

by dc potentiometer in conjunction with a volt ratio box

a dc potentiometer in conjunction with a known resistance

None of the above

Correct Answer : Option (B) : by dc potentiometer in conjunction with a volt ratio box

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In measurements using strain gauge, the dummy strain gauge is used to

compensate for error in voltmeter

compensate for change in temperature

compensate for resistance of strain gauge

compensate for error due to change in voltage of battery

Correct Answer : compensate for change in temperature

A CT is used to feed current coils of wattmeter, energy meter, power factor meter and an ammeter. Then

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the coils are in series-parallel

all the coils are in series

None of the above

Correct Answer : all the coils are in series

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dc value

peak value

true rms value

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Correct Answer : dc value