: O-poles lap field resistance of 125 2 . The number of conductrors of the armature winding is 500 conductors. The motor draw a current of 10 A when the magnetic field is 20 mwb. If rotational losses is 0.2 kW. Draw the circuit diagram and find: i) The armature current ii) The counter e.m.f iii) The motor speed

: O-poles lap field resistance of 125 2 . The number of conductrors of the armature winding is 500 conductors. The motor draw a current of 10 A when the magnetic field is 20 mwb. If rotational losses is 0.2 kW. Draw the circuit diagram and find: i) The armature current ii) The counter e.m.f iii) The motor speed

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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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

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A 250 V, 8-poles lap wound D.C. shunt motor has an armatre resistance of 0.5 N and shunt
field resistance of 125 2 . The mumber of conductrors of the armature winding is 500
conductors. The motor draw a current of 10 A when the magnetic field is 20 mwb. If
rotational losses is 0.2 kW. Draw the circuit diagram and find:
i) The armature current
ii) The counter e.m.f
iii) The motor speed
iv) The motor develop torque
v) Themotor efficiency

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