A 440 V, 22.5-hp, 50 Hz, 3-phase, 4-pole, star-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R1 = 0.552 X, = 1.1050 Ra = 0.350 X2 = 0.4562 Xy = 27.10 The total rotational losses are 1105 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.3% at the rated voltage and rated frequency, d) Electrical power, e) Output power, f) Efficiency.

A 440 V, 22.5-hp, 50 Hz, 3-phase, 4-pole, star-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R1 = 0.552 X, = 1.1050 Ra = 0.350 X2 = 0.4562 Xy = 27.10 The total rotational losses are 1105 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.3% at the rated voltage and rated frequency, d) Electrical power, e) Output power, f) 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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