Which of the following devices should be used for accurate measurement of a low dc voltage? - Measurements and Instrumentation

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

Which of the following devices should be used for accurate measurement of a low dc voltage?

A)

Dc potentiometer

B)

Hot wire instrument

C)

Small range moving coil voltmeter

D)

Small range thermocouple voltmeter

Correct Answer : Option (A) : Dc potentiometer

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A)

compensate for error in voltmeter

B)

compensate for change in temperature

C)

compensate for resistance of strain gauge

D)

compensate for error due to change in voltage of battery

Correct Answer : compensate for change in temperature

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A)

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B)

the coils are in series-parallel

C)

all the coils are in series

D)

None of the above

Correct Answer : all the coils are in series

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B)

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C)

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D)

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