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Discussion :: Measurements and Instrumentation

  1. 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

  2. A.
    250 V
    B.
    252 V
    C.
    248 V
    D.
    210 V

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    Answer : Option C

    Explanation :

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


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