Answered: The armature winding of a 4-pole, 250-V…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The armature winding of a 4-pole, 250-V DC shunt motor is lap connected. There are 130 slots, each slot containing 8 conductors. The flux per pole is 30 mWb and the current taken by the motor is 35-A. The resistance of armature and field circuit are 0.25 and 150 ohms respectively. If the rotational losses amount to 750W. Determine the (a) gross torque in N-m, (b) useful torque in N-m and (c) the efficiency.

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