Short circuit test is performed on a transformer with a certain impressed voltage at rated frequency. If the short circuit test is now performed with the same magnitude of impressed voltage, but at frequency higher than the rated frequency then

• A.  The magnitude of current will decrease but the power factor will increase.
• B.  The magnetude of current will increase, but power factor will decrease.
• C.  The magnitude of circuit as well as the power factor will decrease.
• D.  The magnitude will both increase.

Answer: (C)