A separately excited DC motor has an armature Resistance of 1 Ω, the armature supply voltage is Va= 203 V DC. Initially the motor was running at speed = 677 rpm while supplied by the rated terminal voltage and the armature current = 10 A. While supplying constant torque, what is the speed of the motor if the terminal voltage is reduced to 128 V?

A separately excited DC motor has an armature Resistance of 1 Ω, the armature supply voltage is Va= 203 V DC. Initially the motor was running at speed = 677 rpm while supplied by the rated terminal voltage and the armature current = 10 A. While supplying constant torque, what is the speed of the motor if the terminal voltage is reduced to 128 V?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter30: Dc Motors

Section: Chapter Questions

Problem 4RQ

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