Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 14, Problem 2RQ
What type of float switch does not have a differential setting?
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Chapter 14 Solutions
Understanding Motor Controls
Ch. 14 - When using a rod type float switch, how is the...Ch. 14 - What type of float switch does not have a...Ch. 14 - What is the advantage of the bubbler type system...Ch. 14 - Prob. 4RQCh. 14 - Assume that a pipe has an inside diameter of 1...Ch. 14 - Assume that a pipe has an inside diameter of 1...Ch. 14 - If the green indicator lamps in question 6 do not...
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- The symbol shown is: a. Double acting push button b. Two-position selector switch c. Three-position selector switch d. Maintained contact push buttonarrow_forwardRefer to the circuit shown in Figure 16-11. Assume that the platform is located on the lower floor. When the UP push button is pressed, the platform rises. When the platform reaches the upper floor, however, the pump does not turn off but continues to run until the overload relay opens the overload contacts. Which of the following could cause this problem? a. The solenoid valve opened when limit switch LS1 opened. b. The UP push button is shorted. c. Limit switch LS1 did not open its contacts. d. Limit switch LS2 contacts did not reclose when the platform began to rise.arrow_forwardWhen using a rod type float switch, how is the amount float movement required to open or close the contacts adjusted?arrow_forward
- Refer to the circuit shown in Figure 310. When would the amber pilot light be turned on? a. When the manual/automatic switch is set in themanual position. b. When the float switch contacts are closed. c. Anytime the manual starter is turned on. d. Only when the manual/automatic switch is setin the manual position.arrow_forwardRefer to the circuit shown in Figure 16-11. Assume that the platform is located on the bottom floor. When the UP push button is pressed the pump motor does not start. Which of the following could not cause this problem? The contacts of limit switch LS1 are open. The contacts of limit switch LS2 are open. Motor starter coil M is open. The overload contact is open.arrow_forwardWhat type of switch is contained on most flow switches?arrow_forward
- Refer to Figure 21–1 to answer the following questions. Assume that HOA SW 120 has been set in the auto position. List four ways by which coil CR-8 could be energized.arrow_forwardTo answer the following questions refer to the circuit in Figure 416. When the pressure switch closes, which starter will energize first, 1M or 2M? Explain your answer.arrow_forwardA pressure switch is to be installed in a circuit that requires it to have three normally open contacts and one normally closed contact. The switch actually has one normally open Contact What must be done to permit this pressure switch to operate in this circuit?arrow_forward
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