Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Textbook Question
Chapter 31, Problem 2SQ
What is meant by the description “separate winding two-speed motor”?
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(B)/ Explain briefly the following
Why the armature is connected as LAP winding with high torque low speed
motor application
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(Draw the electrical equivalent circuits for long shunt compounded DC motor and short shunt compounded DC motor carefully and as readable with the names of circuit elements written
on the figures by writing the names of figures below them.)
a 220 V DC shunt motor takes 3 A at no-load. It draws 25 a when running at full load at 1500 rpm. The armature and shunt resistances are 0.5 ohm and 220 ohm, respectively. the no-load speed in rpm is _______.
Chapter 31 Solutions
Electric Motor Control
Ch. 31 - Excluding slip, at what speed (r/min) will an...Ch. 31 - What is meant by the description separate winding...Ch. 31 - Prob. 3SQCh. 31 - Prob. 4SQCh. 31 - In Figure 314, what does the broken line between...Ch. 31 - When the high button is depressed in Figure 314,...Ch. 31 - Which coils are energized immediately when the...Ch. 31 - At what speed can a four-pole, 240-volt, 5-hp,...Ch. 31 - What is meant by the compelling action produced by...Ch. 31 - Prob. 10SQ
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