No-load current in a transformer
A)lags behind the voltage by about 75°
B)leads the voltage by about 75°
C)lags behind the voltage by about 15°
D)leads the voltage by about 15°

Question

Quizplus · Accepted Answer

No-load current in a transformer primarily consists of magnetizing current and a small component of core loss current. The magnetizing current, which is the dominant component, lags behind the voltage by nearly 90 degrees. However, due to the presence of the core loss component, the overall no-load current lags by slightly less than 90 degrees, typically around 75 degrees.

No-Load Current in a Transformer