A 240V shunt motor, running on no-load and at normal speed, takes an armature current of 2.4 A from a 240Vsupply. The resistance of the field circuit is 240Ω, and that of the armature is 0.25Ω. Calculate the motor output power and efficiency when drawing a line current of 35 A from the supply

A 240V shunt motor, running on no-load and at normal speed, takes an armature current of 2.4 A from a 240Vsupply. The resistance of the field circuit is 240Ω, and that of the armature is 0.25Ω. Calculate the motor output power and efficiency when drawing a line current of 35 A from the supply

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

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Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

A 240V shunt motor, running on no-load and at normal speed, takes an armature current of 2.4 A from
a 240Vsupply. The resistance of the field circuit is 240Ω, and that of the armature is 0.25Ω. Calculate
the motor output power and efficiency when drawing a line current of 35 A from the supply

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