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Discussion :: Measurements and Instrumentation

  1. An induction wattmeter can be used for

    2. A.
    dc only
    B.
    50 Hz ac only
    C.
    both ac and dc
    D.
    high frequency ac only

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    Answer : Option B

    Explanation :

    Induction principle is valid for ac only. Induction Instruments are calibrated for 50 Hz ac.

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