Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 32, Problem 6RQ
To determine
Identify the purpose of the DC coil on a polarized field frequency relay.
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What is the peak voltage of a 120V RMS AC voltage?
1. What will be the output voltage during the positive half cycle of the input voltage?
2. What will be the output voltage during the negative half cycle of the input voltage?
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