c) A 20-hp, 220V, 2000 rpm series excited de motor controls a load requiring a torque of TL = 50 N.m at a speed of 1300 rpm. The field circuit resistance is Rr= 150 2, the armature circuit resistance is R, = 0.3 2, and the voltage constant of the motor is Ky = 0.7032 V/A rad/s. The viscous friction and no-load losses are negligible. The armature current may be assumed continuous and ripple free. Determine the; i. amature current I. i. back emf Eg. 111. rated armature current of the motor.
c) A 20-hp, 220V, 2000 rpm series excited de motor controls a load requiring a torque of TL = 50 N.m at a speed of 1300 rpm. The field circuit resistance is Rr= 150 2, the armature circuit resistance is R, = 0.3 2, and the voltage constant of the motor is Ky = 0.7032 V/A rad/s. The viscous friction and no-load losses are negligible. The armature current may be assumed continuous and ripple free. Determine the; i. amature current I. i. back emf Eg. 111. rated armature current of the motor.
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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