A 12 pole, 50 Hz, 3 phase induction motor has rotor resistance of 0.12 ohm and standstill reactance of 0.3 ohm per phase. On full load it is running at a speed of 520 rpm. The rotor induced e.m.f. per phase at standstill is observed to be 25 V. Calculate: i) starting torque ii) full load torque

A 12 pole, 50 Hz, 3 phase induction motor has rotor resistance of 0.12 ohm and standstill reactance of 0.3 ohm per phase. On full load it is running at a speed of 520 rpm. The rotor induced e.m.f. per phase at standstill is observed to be 25 V. Calculate: i) starting torque ii) full load torque

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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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

Calculate:

i) starting torque

ii) full load torque

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