Q26. The armature resistance of a permanent magnet demotor is 0.8 W. At no load, the motor draws 1.5 A from asupply voltage of 25 V and runs at 1500 rpm. Theefficiency of the motor while it is operating on load at 1500rpm drawing a current of 3.5 A from the same source willbe

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Q26. The armature resistance of a permanent magnet d motor is 0.8 W. At no load, the motor draws 1.5 A from supply voltage of 25 V and runs at 1500 rpm. Th efficiency of the motor while it is operating on load at 150 rpm drawing a current of 3.5 A from the same source wi

Q26. The armature resistance of a permanent magnet d motor is 0.8 W. At no load, the motor draws 1.5 A from supply voltage of 25 V and runs at 1500 rpm. Th efficiency of the motor while it is operating on load at 150 rpm drawing a current of 3.5 A from the same source wi

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 2RQ

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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

Q26. The armature resistance of a permanent magnet de
motor is 0.8 W. At no load, the motor draws 1.5 A from a
supply voltage of 25 V and runs at 1500 rpm. The
efficiency of the motor while it is operating on load at 1500
rpm drawing a current of 3.5 A from the same source will
be

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