Which of the following statements about Schrage motor is incorrect?
A. it gives normally speed range of 3 to i but much speed ranges upto 15 to I and higher may also be obtained.
B. It is cheaper than the slip-ring induction motor.
C. Its efficiency is higher than that of a slip-ring induction motor at all speeds except synchronous speed and is very much high at lower speeds
D. While operating exactly at synchronous speed it behaves, in a sense. like a synchronous motor with compensating winding functioning as a dc exciter.
Show Answer
Answer: B
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