A 3-phase 8-pole induction motor is connected to a 3-phase system with line-to-line voltage of 400V (peak) and frequency of 60HZ. Stator resistor is 0.72 and total stator copper loss is 840w. Iron loss is 400W and friction loss is 133W. Motor is rotating at 888rpm. Input power factor is 95% lagging. Determine: (i) Input power (ii) Output mechanical power and efficiency

A 3-phase 8-pole induction motor is connected to a 3-phase system with line-to-line voltage of 400V (peak) and frequency of 60HZ. Stator resistor is 0.72 and total stator copper loss is 840w. Iron loss is 400W and friction loss is 133W. Motor is rotating at 888rpm. Input power factor is 95% lagging. Determine: (i) Input power (ii) Output mechanical power and efficiency

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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