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If a 3-phase induction motor is fed from the rotor short circuiting the stator terminals, frequency of the current flowing in the short-circuited stator is?

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If a 3-phase induction motor is fed from the rotor short circuiting the stator terminals, frequency of the current flowing in the short-circuited stator is?

(a) slip frequency

(b) supply frequency

(c) zero

(d) frequency corresponding to the rotor speed

This question was posed to me by my school teacher while I was bunking the class.

My enquiry is from Starting of Polyphase Induction Motors-II topic in section Starting of Induction Motors of Electrical Machines

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Best answer
Correct choice is (a) slip frequency

The explanation: In the stator the flux developed will revolve with a speed of slip frequency.

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