**Answer :** In short circuit test of transformer the low voltage side is short circuited . On high voltage side the voltmeter is connected in parallel and ammeter in series and also a wattmeter is ... circuit test is done for determining impedance and losses. In this test iron losses is neglected.

Description : Explain the procedure to perform Short Circuit test on single phase transformer with circuit diagram.

Description : Describe the difference between an open circuit and a short circuit.

**Answer :** Open circuit means the wire is cut meaning power will not flow and close circuit means wire is not cut and hence power will flow.Short circuit is the same as close circuit

Description : If the % reactance upto the fault point is 20%, then the short circuit current will be

**Answer :** If the % reactance upto the fault point is 20%, then the short circuit current will be 5 times the full load current

Description : The armature current on symmetrical 3 phase short circuit of a synchronous machine (salient pole) (A) has q -axis current only (B) has d -axis current only (C) has both d and q axis currents (D) cannot be divided between q and d axis currents

**Answer :** The armature current on symmetrical 3 phase short circuit of a synchronous machine (salient pole) has d -axis current only