A small 3-phase induction motor has a short-circuit current equal o 5 times the full-load current. Determine the starting current and starting torque if resistance starter is used to reduce the impressed voltage to 60% of normal voltage. The ull-load slip is 0.05.

A small 3-phase induction motor has a short-circuit current equal o 5 times the full-load current. Determine the starting current and starting torque if resistance starter is used to reduce the impressed voltage to 60% of normal voltage. The ull-load slip is 0.05.

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 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

A small 3-phase induction motor has a short-circuit current equal
to 5 times the full-load current. Determine the starting current and starting torque if
resistance starter is used to reduce the impressed voltage to 60% of normal voltage. The
full-load slip is 0.05.

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