Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 12, Problem 1SQ
To determine
Explain the typical uses of flow switches.
Expert Solution & Answer
Explanation of Solution
A flow switch is a device that can be placed into a pipe so that when an air or liquid flows against a device called paddle, a switch is activated. This switch either closes or opens an electrical contact. The electrical contacts may be wired to energize the motor starter coils, indicating lights or relays. The flow switch is also used to protect the damage of the device and also for protection of cooling circuits. Refer to Figure 12-2 in the textbook where the flow switch consists of both normally open and closed contacts. Flow switches are typically used in petroleum and chemical industries to sound alarm or light when signal flows and to sound warning light when flow stops.
Conclusion:
Thus, the typical uses of flow switches have been explained.
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A plane wave propagating in the +z direction in medium 1 is normally incident to medium 2 located at
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the z=0 plane as below. Both mediums are general, characterized by ( ε i, Hi, σ¡ ).
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Chapter 12 Solutions
Electric Motor Control
Ch. 12 - Prob. 1SQCh. 12 - Draw a line diagram to show that a green light...Ch. 12 - Draw a one-line diagram showing a bell that will...Ch. 12 - To answer the following questions refer to Figure...Ch. 12 - When the thermostat contacts close, the blower...Ch. 12 - When the thermostat contacts close, the blower...Ch. 12 - When the thermostat contacts close the blower...
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