Correct Answer : Option (B) : Copper loss
Explanation : The short circuit test is performed to find the copper loss in the transformer. It is done by shorting the low voltage terminal and applying a low voltage across the high voltage terminal (because the current in the high voltage terminal will be less and simple to handle) and connect a wattmeter to measure the power dissipated in the low voltage terminal. The wattmeter reflects the full load copper loss.
