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Why the slip is never zero in an induction motor?

July 6, 2018 by

DWQA Questions › Category: Induction Motor & Generator › Why the slip is never zero in an induction motor?
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admin Staff asked 5 years ago
2 Answers
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admin Staff answered 5 years ago

The speed will be the synchronous speed of the motor if slip becomes Zero. The slip of an Induction motor can never be zero.This is because

1. If the rotor speed and stator speed will equal where will no change is flux linking with the rotor, and hence no current flow through the rotor conductor, resulting no torque or force.

2. In motors the number of rotor slots and stator slots are different and thus cogging (magnetic locking) can’t happen. And thus The slip motor can’t run at rated speed.

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admin Staff answered 5 years ago

Torque developed by induction motor is proportional to the slip. At synchronous speed,slip is zero and hence torque developed by the motor is zero.

You are welcome to read more Important Interview Questions and MCQs.

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