A 220V, 900rpm, 120A separately excited dc motor has an armature resistance of 0.05 Q. It is fed from a single phase fully -controlled converter with an a.c source voltage of 240 V , 50 Hz, Assuming continuous conduction mode of operation, Calculate (i) Find the speed of the motor when firing angle of the converter is 45 degree and motor is operating at rated torque (ii) Find the speed of the motor firing angle of the converter is 140 degree andand motor is operating at rated torque

A 220V, 900rpm, 120A separately excited dc motor has an armature resistance of 0.05 Q. It is fed from a single phase fully -controlled converter with an a.c source voltage of 240 V , 50 Hz, Assuming continuous conduction mode of operation, Calculate (i) Find the speed of the motor when firing angle of the converter is 45 degree and motor is operating at rated torque (ii) Find the speed of the motor firing angle of the converter is 140 degree andand motor is operating at rated torque

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 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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