(c)A 240 V DC shunt motor provides power to a load at 900 rpm. The currentin the armature is 120 A, the armature circuit resistance is 70 m and thefield resistance is 90.Calculate the copper losses of the motor.Calculate the input power, output power and the efficiency of themotor, if on top of the copper losses the iron, friction and windagelosses are 400 W.(i)(ii)

Given dataTerminal voltage, Speed, Armature current, Armature resistance, Field resistance/shunt…

(c) A 240 V DC shunt motor provides power to a load at 900 rpm. The current in the armature is 120 A, the armature circuit resistance is 70 m and the field resistance is 90. (i) (ii) Calculate the copper losses of the motor. Calculate the input power, output power and the efficiency of the motor, if on top of the copper losses the iron, friction and windage losses are 400 W.

(c) A 240 V DC shunt motor provides power to a load at 900 rpm. The current in the armature is 120 A, the armature circuit resistance is 70 m and the field resistance is 90. (i) (ii) Calculate the copper losses of the motor. Calculate the input power, output power and the efficiency of the motor, if on top of the copper losses the iron, friction and windage losses are 400 W.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter43: About Dc Motors

Section: Chapter Questions

Problem 1SQ

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