Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 18, Problem 18RQ
To determine
The cause of rotation of magnetic field in a shaded-pole induction motor.
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Students have asked these similar questions
7. Who among the following got a patent for an induction motor in 1888?
A. Newton
B. Torilcelli
C. Nichola Tesla
D. Thomas Edison
Name three factors that determine the torque produced by an induction motor.
The reason why the starting torque of a series motor is higher than a shunt motor is
because the series motor has
O more current flowing through its armature
O a stronger net magnetic field around both coils during the inrush of stator current
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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- Why can an induction motor never operate at synchronous speed?arrow_forwardWhat is the advantage of the capacitor-start induction-run motor over the resistance-start induction-run motor?arrow_forwardWhen 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_forward
- A 75 HP, three-phase squirrel cage induction motor is connected to 480 volts. The motor has a NEMA code D. What is the starting current for this motor?arrow_forwardName three factors that determine the amount of torque developed by a wound rotor induction motor.arrow_forwardWhy can a multispeed fan motor be operated at lower speed than most induction motors without harm to the motor windings?arrow_forward
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