A six pole, 3 - 0, 50 Hz induction motor has a rotor resistance and rotor reactance c 0.02 Q and 0.13 O respectively at stand still. The external resistance to be added in the rotor circuit to get 75% of maximum torque at starting is _

A six pole, 3 - 0, 50 Hz induction motor has a rotor resistance and rotor reactance c 0.02 Q and 0.13 O respectively at stand still. The external resistance to be added in the rotor circuit to get 75% of maximum torque at starting is _

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

A six pole, 3 - 0, 50 Hz induction motor has a rotor resistance and rotor reactance c
0.02 Q and 0.13 O respectively at stand still. The external resistance to be
added in the rotor circuit to get 75% of maximum torque at starting is _

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