In a current transformers - Measurements and Instrumentation

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

In a current transformers

the number of turns in primary and secondary windings are nearly equal

the number of secondary turns is very small as compared to the number of primary turns

Both (A) and (B)

the number of primary turns is very small as compared to number of secondary turns.

Correct Answer : Option (D) : the number of primary turns is very small as compared to number of secondary turns.

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

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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

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None of the above

Correct Answer : all the coils are in series

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true rms value

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Correct Answer : dc value