6.36 A 440 V, 3-phase, 50 Hz, 6-pole, 945 rpm, delta connected induction motor has following parameters referred to the stator: R, = 2.02, R; = 2.0 2, X, = 32, X; = 42 When driving a fan load at rated voltage it runs at rated speed. The motor speed is controlled by stator voltage control. Determine (1) Motor terminal voltage, current and torque at 800 rpm . (ii) Motor speed, current and torque for the terminal voltage of 280 V. 6.36 (1) 253 V, 31.55 A, 95 N-m; (ii) 850 rpm (approx.) 28.77 A (approx.), 105 N-m (approx.) The final answer:

6.36 A 440 V, 3-phase, 50 Hz, 6-pole, 945 rpm, delta connected induction motor has following parameters referred to the stator: R, = 2.02, R; = 2.0 2, X, = 32, X; = 42 When driving a fan load at rated voltage it runs at rated speed. The motor speed is controlled by stator voltage control. Determine (1) Motor terminal voltage, current and torque at 800 rpm . (ii) Motor speed, current and torque for the terminal voltage of 280 V. 6.36 (1) 253 V, 31.55 A, 95 N-m; (ii) 850 rpm (approx.) 28.77 A (approx.), 105 N-m (approx.) The final answer:

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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