During open circuit test of a transformer
A)primary is supplied rated voltage
B)primary is supplied full-load current
C)primary is supplied current at reduced voltage
D)primary is supplied rated kVA

Question

Quizplus · Accepted Answer

The open circuit test of a transformer is performed by supplying the rated voltage to the primary winding while keeping the secondary winding open. This test is used to determine the core losses or no-load losses of the transformer, which are practically constant and occur due to the applied voltage.

During Open Circuit Test of a Transformer