Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 9, Problem 7RQ
Refer to the circuit shown in Figure 9–7. Assume that when the forward push button is pressed the motor does not start, but when the reverse push button is pressed the motor will start in the reverse direction. When the stop button is pressed the motor stops running. Which of the following could NOT cause this problem?
- a. The forward push button is defective.
- b. The F starter coil is open.
- c. The overload auxiliary contact is open.
- d. The normally closed R contact is open.
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Chapter 9 Solutions
Understanding Motor Controls
Ch. 9 - Prob. 1RQCh. 9 - What is interlocking?Ch. 9 - Referring to the schematic shown in Figure 97, how...Ch. 9 - What would be the danger, if any, if the circuit...Ch. 9 - Prob. 5RQCh. 9 - Assume that the circuit shown in Figure 97 were to...Ch. 9 - Refer to the circuit shown in Figure 97. Assume...Ch. 9 - Prob. 8RQ
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