Q4-The armature winding of 4-pole, 250V d.c. shunt motor is lap connected. There are 120 solts, each slot containing 8 conductors. The fluxper pole is 20 mWb and current taken by the motor is 25 A. The resistance of armature and filed circuit are 0.1 and 125 2 respectively. If the rotational losses amount to be 810 W. Find (i) Armature torque, (ii) useful torque and (iii) efficiency.

Q4-The armature winding of 4-pole, 250V d.c. shunt motor is lap connected. There are 120 solts, each slot containing 8 conductors. The fluxper pole is 20 mWb and current taken by the motor is 25 A. The resistance of armature and filed circuit are 0.1 and 125 2 respectively. If the rotational losses amount to be 810 W. Find (i) Armature torque, (ii) useful torque and (iii) efficiency.

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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