Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Question
Chapter 28, Problem 1RQ
To determine
The principle of operation of a DC motor.
Expert Solution & Answer
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Explanation of Solution
A direct current motor is an electrical device that produces
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Students have asked these similar questions
Problem 5
1.
Where and why is a centrifugal switch used in a split-phase motor?
2.
Why and where is a capacitor used in the single-phase AC motor?
3. What type of motor would you select to perform each of the following jobs?
(a) Electric drill:
(b) Refrigerator:
(c) Hair driers and desk fans:
(d) Air Conditioner Fan:
(e) XY plotters and printers:
(f) Electric clock:
Name three factors that determine the amount of voltage induced in the rotor of a wound-rotor motor.
A (21 HP, 3-Phase, 380 volts) motor with an efficiency of 95% is operating at a load
factor of 0.63. What is the input current (Amperes) when the power factor is 89%? (1
HP = 0.75 kW)
Chapter 28 Solutions
Understanding Motor Controls
Ch. 28 - Prob. 1RQCh. 28 - What are the three basic types of direct current...Ch. 28 - Prob. 3RQCh. 28 - What type of armature winding is generally used...Ch. 28 - Prob. 5RQCh. 28 - Prob. 6RQCh. 28 - Prob. 7RQCh. 28 - Prob. 8RQCh. 28 - Explain the difference between cumulative and...Ch. 28 - Prob. 10RQ
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