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Measurements and Instrumentation

Q1:

A moving iron voltmeter reads 250 V when connected to 250 V dc. If connected to 250 V 50 Hz, the voltmeter reading is likely to be

A 250 V

B 252 V

C 248 V

D 210 V

ANS:C - 248 V

The inductance of coil will allow slightly less ac current. Hence reading slightly less.



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