for the shunt excited motor running at 1250 rpm, the shunt field current is 0.6A and the armature current is 3.4A, armature resistance is 4 ohm and the supply voltage is 220V, the torque is 5.4, then the motor efficiency is approximately equal to

for the shunt excited motor running at 1250 rpm, the shunt field current is 0.6A and the armature current is 3.4A, armature resistance is 4 ohm and the supply voltage is 220V, the torque is 5.4, then the motor efficiency is approximately equal to

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

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

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نقطتان )2(
for the shunt excited motor
running at 1250 rpm, the
shunt field current is 0.6A and
the armature current is 3.4A,
armature resistance is 4 ohm
and the supply voltage is
220V, the torque is 5.4, then
the motor efficiency is
approximately equal to
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