The minimum armature current of the synchronous motor corresponds to operation at
A)zero power factor leading
B)unity power factor
C)0.707 power factor lagging
D)0.707 power factor leading

Question

Quizplus · Accepted Answer

The minimum armature current of a synchronous motor occurs at unity power factor because this is when the motor is most efficient, drawing the least current for a given power output. At unity power factor, the reactive power component is minimized, reducing the total current required from the source.

The Minimum Armature Current of the Synchronous Motor Corresponds to Operation