As the load is applied to a synchronous motor, the motor takes more armature current because
A)the increased load has to take more current
B)the rotor by shifting its phase backward causes motor to take more current
C)the back e.m.f. decreases causing an increase in motor current
D)the rotor strengthens the rotating field casuing more motor current

Question

Quizplus · Accepted Answer

As the load increases, the rotor lags behind the synchronous speed, causing a phase shift that increases the armature current to maintain the torque.

As the Load Is Applied to a Synchronous Motor, the Motor