Electronics - Alternating Current and Voltage - Discussion


In both induction and synchronous ac motors

[A]. the operating speed is very steady
[B]. the stator magnetic field is stationary
[C]. the stator magnetic field rotates
[D]. the "squirrel cage" forms the rotor

Answer: Option C


No answer description available for this question.

Sunil Kumar said: (Jun 6, 2012)  
We know that without change in magnetic field no mutual induction will occur. In AC motor we know there is a mutual induction. Thats so why m.f should be rotatary.

Raju said: (Apr 7, 2015)  
Inductions motors are single phase and a asynchronous speed. Stator produce the rotating magnetic field. Its not rotate. But it rotates the rotor.

Fredozki said: (Dec 31, 2016)  
Yes, you are both are correct.

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