Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
4th Edition
ISBN: 9780357097755
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 41, Problem 1RQ
To answer the following questions refer to the circuit in Figure 41–6.
The pressure switch is shown as:
- a. Normally open
- b. Normally closed
- c. Normally open held closed
- d. Normally closed held open
Expert Solution & Answer

To determine
The state of the pressure switch used in the circuit shown in Figure 41-6.
Explanation of Solution
Refer text book Figure 41-6.
The pressure switch shown in the circuit has its movable contact above the fixed contact. Hence, the pressure switch is normally closed and kept open for the circuitry purpose. This switch is called a “normally closed held open switch”. The schematic of normally closed held open pressure switch is shown in Figure 1 below:
Thus, the correct answer is “option d. normally closed held open”.
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Chapter 41 Solutions
Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
Ch. 41 - To answer the following questions refer to the...Ch. 41 - To answer the following questions refer to the...Ch. 41 - Prob. 3RQCh. 41 - To answer the following questions refer to the...Ch. 41 - To answer the following questions refer to the...Ch. 41 - Prob. 6RQCh. 41 - To answer the following questions refer to the...Ch. 41 - To answer the following questions refer to the...Ch. 41 - Prob. 9RQCh. 41 - Prob. 10RQ
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