Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 18, Problem 25RQ
To determine
The principle of operation of stepping motor.
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Chapter 18 Solutions
Electrical Transformers and Rotating Machines
Ch. 18 - Prob. 1RQCh. 18 - Prob. 2RQCh. 18 - Prob. 3RQCh. 18 - Prob. 4RQCh. 18 - What is the advantage of the capacitor-start...Ch. 18 - Prob. 6RQCh. 18 - Prob. 7RQCh. 18 - Prob. 8RQCh. 18 - Prob. 9RQCh. 18 - Prob. 10RQ
Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - What type of single-phase motor develops the...Ch. 18 - What is the principle of operation of a repulsion...Ch. 18 - What type of commutator is used with a...Ch. 18 - When a repulsion-start induction-run motor reaches...Ch. 18 - Prob. 17RQCh. 18 - Prob. 18RQCh. 18 - Prob. 19RQCh. 18 - How is the speed of a consequent pole motor...Ch. 18 - Why can a multispeed fan motor be operated at...Ch. 18 - What is the speed of operation of the Warren...Ch. 18 - What is the speed of operation of the Holtz motor?Ch. 18 - Prob. 24RQCh. 18 - Prob. 25RQCh. 18 - What does the term bifilar mean?
Ch. 18 - Why do stepping motors have teeth machined in the...Ch. 18 - Prob. 28RQCh. 18 - Prob. 29RQCh. 18 - Prob. 30RQCh. 18 - Prob. 31RQCh. 18 - What is the function of the compensating winding?
Ch. 18 - Prob. 33RQCh. 18 - Prob. 34RQCh. 18 - Explain how to set the neutral plane position of...Ch. 18 - Explain how to set the neutral plane position by...
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- What is the principle of operation of a repulsion motor?arrow_forwardProblem 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:arrow_forwardGiven the following experimental data collected, what is the approximate torque of this motor at peak efficiency?arrow_forward
- what is the mechanical power developed by a motor that turns at 2500 rpm and has a torque of 4 Nmarrow_forwardWhat is the speed of operation of the Warren motor?arrow_forwardWhat solid-state device is generally used to produce variable frequency in drives designed to control motors up to 500 HP?arrow_forward
- (a) Describe/Illustrate in detail: Ways how to convert/transform the rotary motion (vertical or horizontal traverse) of the shaft of a motor to linear motion/displacement (prismatic). (b) Represent mathematically the relation of the rotary motion of the shaft of the motor to linear.arrow_forwardThe supply frequency is 50 Hz. What will be the rotor voltage frequency if the motor speed is equal to 90% of synchronous speed. O 45 Hz. O 10 Hz. 05 Hz. O None.arrow_forwardA 7460 W split-phase motor running at 1750 rpm is used to drive a rotary pump. The pump should run continuously at approximately 1175 rpm. The center distance should not exceed 1118 mm. Space limits the diameter of the driven pulley to 292 mm. Determine: a. the pulley diameters, b. the belt size, and c. the number of belt required.arrow_forward
- When a repulsion-start induction-run motor reaches about 75% of rated full-load speed, it stops operating as a repulsion motor and starts operating as a squirrel-cage motor. What must be done to cause the motor to begin operating as a squirrel-cage motor?arrow_forward26. Explain the principles of DC motors, including the DC permanent magnet motor and how it can have speed control. (10 marks)arrow_forwardName three factors that determine the amount of voltage induced in the rotor of a wound-rotor motor.arrow_forward
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