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Discussion :: Measurements and Instrumentation

  1. The coil of a moving iron instrument has a resistance of 500 Ω and an inductance of 1 H. It reads 250 V when a 250 V dc is applied. If series resistance is 2000 Ω, its reading when fed by 250 V, 50 Hz ac will be

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

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    Workspace

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    Answer : Option D

    Explanation :

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