A variable speed DC motor drives a load that requires a constant torque of 400Nm with thepower varies from 5hp to 15hp. The motor is connected to a 300V DC supply. The armatureresistance is 0.12 and the armature current remains constant at 40A. The speed of the motoris varied via armature resistance control. [note: 1hp (hoursepower) = 746W].Determine the rheostat range that is required for this design.

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Answered: A variable speed DC motor drives a load…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter5: Resistors

Section: Chapter Questions

Problem 1PA

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