If in a synchronous motor, driving mechanical load and drawing current at lagging power factor from constant voltage supply, its field excitation is increased, then its power factor
A)become more
B)become less
C)remain constant
D)none of the above

Question

Quizplus · Accepted Answer

Increasing the field excitation in a synchronous motor causes the power factor to become less lagging or even leading, as the motor moves towards over-excitation.

If in a Synchronous Motor, Driving Mechanical Load and Drawing