EBK ELECTRICAL TRANSFORMERS AND ROTATIN
4th Edition
ISBN: 9781337025867
Author: Herman
Publisher: VST
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Textbook Question
Chapter 16, Problem 10RQ
Is the rotor excitation current AC or DC?
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a- What are the assumption rigid rotor model is based on?
b-What are the limitations of this model?
The 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.
What is the frequency (in Hz) of a motor spinning at 1740 rpm?
Chapter 16 Solutions
EBK ELECTRICAL TRANSFORMERS AND ROTATIN
Ch. 16 - What conditions must be met before two alternators...Ch. 16 - How can the phase rotation of one alternator be...Ch. 16 - What is the function of the synchronizing lamps?Ch. 16 - What is a synchroscope?Ch. 16 - Assume that alternator A is supplying power to a...Ch. 16 - What two factors determine the output frequency of...Ch. 16 - At what speed must a six-pole alternator turn to...Ch. 16 - What three factors determine the output voltage of...Ch. 16 - What are slip rings used for on a rotating field...Ch. 16 - Is the rotor excitation current AC or DC?
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