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Developed torque during plugging is _________

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Developed torque during plugging is _________

(a) negative

(b) positive

(c) zero

(d) any of the mentioned

I had been asked this question in examination.

This intriguing question comes from Analysis of the Equivalent Circuit in section Induction Machines of Electrical Machines

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Correct option is (b) positive

The explanation: Torque will not be negative in braking mode in the induction motor.

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