INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780357670590
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 25, Problem 1RQ
Refer to Figure 25–1 to answer the following questions.
When switch HOA SW 122 is in the OFF position, which contacts have connection between them?
Expert Solution & Answer
To determine
The contacts that have connection between them when the switch is in off position.
Explanation of Solution
Refer to the table for the HOA SW 122. The X shows that for the connection between the two contacts the O indicates that there is no connection between the two contacts.
The case when the switch HOA SW 122 is in the off state, the contact
Thus, the contact that have connection between them is
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Chapter 25 Solutions
INDUSTRIAL MOTOR CONTROL
Ch. 25 - Refer to Figure 251 to answer the following...Ch. 25 - Refer to Figure 25–1 to answer the following...Ch. 25 - Refer to Figure 25–1 to answer the following...Ch. 25 - Prob. 4RQCh. 25 - Prob. 5RQCh. 25 - Prob. 6RQCh. 25 - Prob. 7RQCh. 25 - Refer to Figure 251 to answer the following...Ch. 25 - Refer to Figure 25–1 to answer the following...Ch. 25 - Prob. 10RQ
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- Refer to Figure 21–1 to answer the following questions. In what position must switch SW 123 be set to make connection between terminals 3 and 4?arrow_forwardRefer to Figure 211 to answer the following questions. Referring to switch (RS SW 123), in what position must the switch be set to make connection between terminals 3 and 4?arrow_forwardRefer to the schematic diagram in Figure 318. Assume that the motor is not running. When the third speed push button is pressed, the motor starts in its lowest speed. After a delay of 3 seconds, the motor accelerates to second speed and 3 seconds later to third speed. After a period of about 1 minute, the fourth speed push button is pressed, but the motor does not accelerate to fourth speed. Which of the following could cause this problem? a. Control relay CR2 coil is open. b. S2 contactor coil is open. c. CR3 coil is shorted. d. S3 contactor coil is open.arrow_forward
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- Refer to the circuit shown in Figure 15-6. The STOP button is shown to be an emergency STOP button. What does the symbol used for the STOP button actually represent?arrow_forwardFollowing the procedure discussed in Chapter 7, place wire numbers on the schematic in Figure 8–7. Place corresponding wire numbers on the components shown in Figure 8–8.arrow_forwardRefer to the schematic in Figure 7-10. Assume that when the START button is pressed, the control transformer fuse blows. What is the most likely cause of this trouble? Figure 7-10 Numbers are placed beside all components.arrow_forward
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