Discussion :: Measurements and Instrumentation
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Measuring of unknown voltage with a dc potentiometer loses its advantage of open circuit measurement when
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A.
primary circuit battery is changed
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B.
standardisation is done to compensate for drift
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C.
voltage is larger than range of potentiometer
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D.
range reduction by factor of 10 is employed
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Answer : Option D
Explanation :
When volt ratio box is used to reduce range, the advantage of open-circuit measurement is lost.
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