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Discussion :: Measurements and Instrumentation

  1. Two ammeters having resistances of 0.5 Ω and 0.25 Ω and having full scale reading of 25 A each are connected in parallel. To ensure that neither of them goes beyond scale, the total current should not be more than

    2. A.
    50 A
    B.
    37.5 A
    C.
    25 A
    D.
    40 A

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    Answer : Option B

    Explanation :

    or V = 37.5 V.

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