When a Scharge motor runs exactly at synchronous speed, then
A. secondary voltage E2 comes into phase with primary back e.m.f. E1
B. the speed of the motor field relative to that of regulating winding becomes zero
C. voltage injected from the compensation winding into secondary becomes equal and opposite to the secondary induced voltage
D. it behaves, in a sense, like a synchronous motor with compensating winding functioning as D.C.
Show Answer
Answer: D
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