For a 3-phase slip-ring induction motor, the maximum torque is 2-5 times the full-load torque and the starting torque is 15 times the full-load torque. Determine the percentage reduction in rotor circuit resistance to get full-load slip at 3 %. Neglect stator impedance. [56-8 %]

For a 3-phase slip-ring induction motor, the maximum torque is 2-5 times the full-load torque and the starting torque is 15 times the full-load torque. Determine the percentage reduction in rotor circuit resistance to get full-load slip at 3 %. Neglect stator impedance. [56-8 %]

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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wdu 00g]
6 For a 3-phase slip-ring induction motor, the maximum torque is 2-5 times the full-load torque and the
starting torque is 1-5 times the full-load torque. Determine the percentage reduction in rotor circuit
resistance to get full-load slip at 3 %. Neglect stator impedance.
[56-8 %]

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