In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then
A)the motor is said to be fully loaded
B)the torque generated is maximum
C)the excitation is said to be zero per cent
D)the excitation is said to be hundred per cent

Question

Quizplus · Accepted Answer

In a synchronous motor, if the back e.m.f. generated in the armature at no-load is approximately equal to the applied voltage, it indicates that the motor is operating at unity power factor, which is typically the case when the excitation is optimal or at 100%. This condition does not directly relate to the motor being fully loaded, torque generation, or zero percent excitation.

In a Synchronous Motor It the Back E