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Discussion :: Measurements and Instrumentation

  1. A single phase energy meter has the rating 1200 resolutions/ kWh. If a 500 W electric gadget is used for 4 hours, the energy meter will make

    2. A.
    1200 revolutions
    B.
    1800 revolutions
    C.
    2100 revolutions
    D.
    2400 revolutions

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    Answer : Option D

    Explanation :

    0.5 x 4 = 2 kWh = 2 x 1200 revolutions.

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