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Discussion :: Network Analysis and Synthesis

  1. A 3 phase balanced supply feeds 3 phase unbalanced load. Power supplied to the load can be measured by using

    1. 2 wattmeter
    2. one wattmeter
    3. 3 wattmeter
    Which of the above statements is correct?

    2. A.
    1 and 2
    B.
    1 and 3
    C.
    2 and 3
    D.
    3 alone

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    Answer : Option B

    Explanation :

    A minimum of 2 wattmeters is required to measure 3 phase power. Of course power can be measured by putting one wattmeter in each phase.

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