Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 38, Problem 10RQ
Refer to the circuit shown in Figure 38–5. Assume that timer TR1 is set for a delay of 10 seconds and timer TR2 is set for a delay of 5 seconds. When the Start button is pressed, the motor starts. After 10 seconds, the S1 contacts open and the motor continues to accelerate but never reaches full speed. After a delay of about 30 seconds, the motor trips out on overload. Which of the following could cause this problem?
- a. TR1 coil is open.
- b. S2 coil is open.
- c. S1 coil is open.
- d. R coil is open.
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Chapter 38 Solutions
Industrial Motor Control
Ch. 38 - Prob. 1RQCh. 38 - Explain the differences between open and closed...Ch. 38 - Prob. 3RQCh. 38 - Refer to the circuit shown in Figure 382. Assume...Ch. 38 - Prob. 5RQCh. 38 - Prob. 6RQCh. 38 - Prob. 7RQCh. 38 - Refer to the circuit shown in Figure 385. Explain...Ch. 38 - Prob. 9RQCh. 38 - Refer to the circuit shown in Figure 38–5. Assume...
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