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Discussion :: GATE EEE

  1. A single-phase transformer has no-load loss of 64 W, as obtained from an open-circuit test. When a short-circuit test is performed on it with 90% of the rated currents flowing in its both LV and HV windings, the measured loss is 81 W. The transformer has maximum efficiency when operated at
  2. A.
    50.0% of the rated current.
    B.
    64.0% of the rated current.
    C.
    80.0% of the rated current.
    D.
    88.8% of the rated current.

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    Answer : Option C

    Explanation :

    -NA-


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