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A de shunt Motor running light takes current of 4A and run at speed (660 r.p.m) the Ra is 0.3 ohm and that the Rsh is 270 ohm 50 h.p (37.3 kw) 460 v. Determine whine the motor running at full load : 1- The current in put . 2-The speed determine the armature current at which efficiency is maximum

A de shunt Motor running light takes current of 4A and run at speed (660 r.p.m) the Ra is 0.3 ohm and that the Rsh is 270 ohm 50 h.p (37.3 kw) 460 v. Determine whine the motor running at full load : 1- The current in put . 2-The speed determine the armature current at which efficiency is maximum

Introductory Circuit Analysis (13th Edition)
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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A de shunt Motor running light takes current of 4A and run at speed (660 r.p.m) the Ra is 0.3 ohm and that the Rsh is 270 ohm 50 h.p (37.3 kw) 460 v. Determine whine the motor running at full load : 1- The current in put . 2-The speed determine the armature current at which efficiency is maximum
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Step 1

It is given that:

Output Power=Pout=37.3 KWOutput Voltage=V=460 VArmature Resistance=Ra=0.3 ΩShunt Resistance=Rsh=270 ΩOutput current for light load=4 ASpeed=N1=660 rpm

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