Answer Posted / chiranjit ghosh, hetc

WE KNOW XL=2(pi)FL.IN CASE OF DC F=0. AS F=0, XL=0 ALSO. SO
THERE IS NO INDUCTIVE REACTANCE IN THE PRIMARY CIRCUIT IF DC
IS FED TO TRANSFORMER.THE PRIMARY WINDING BEHAVE LIKE SIMPLE
CONDUCTOR.NOW ITS LOOK LIKE U GIVE A DC VOLTAGE ACROSS A
CONDUCTOR. THE PRIMARY WINDING(CONDUCTOR) WILL HEATED UP AND
WINDING BURN DUE TO HEATING.

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