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     EduGorilla 
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    Consider the following statements regarding transformer test.
    A) Sumpner’s test is done to detect the temperature rise in a transformer.
    B) In Sumpner’s test primaries and secondaries of two identical transformers is connected in series.
    C) In no load test, the current is drawn at high power factor.
    D) In impedance test the transformer is subjected to only copper loss.
    Which of the following statement is/are correct?

    Options :-

    1. A, B and C
    2. A, B and D
    3. A and D
    4. C and D
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