Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 7, Problem 1RQ
Refer to the circuit shown in Figure 7-10. If wire number 11 were disconnected at the normally open auxiliary M contact, how would the circuit operate?
Figure 7-10 Numbers are placed beside all components.
Expert Solution & Answer
To determine
Identify how the circuit would operate.
Explanation of Solution
In the given circuit, the auxiliary contact M is connected in parallel to the start button. The operation of the circuit after disconnecting the auxiliary contact M will be as follows:
- When the start button is pressed, the coil gets energized and the circuit is closed.
- After the start button is released, there is no closed circuit, and this leads to an open circuit.
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Chapter 7 Solutions
Understanding Motor Controls
Ch. 7 - Refer to the circuit shown in Figure 7-10. If wire...Ch. 7 - Assume that when the START button is pressed M...Ch. 7 - Explain the difference between a motor starter and...Ch. 7 - Refer to the schematic in Figure 7-10. Assume that...Ch. 7 - Explain the difference between load and auxiliary...Ch. 7 - Prob. 6RQCh. 7 - In a schematic diagram, what does a dashed line...
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- Refer to the circuit shown in Figure 5-29. In this circuit, the HR contactor is equipped with five contacts. Three are load contacts and two are auxiliary contacts. From looking at the schematic diagram, how is it possible to identify which contacts are the load contacts and which are the auxiliary contacts? Figure 5-29 The contactor contains both load and auxiliary contacts.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 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_forward
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