Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 16, Problem 9RQ
To determine
Working parameters of electric controls.
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Technician A says that some types of voltage sensors provide input to the computer by modifying or controlling a constant, predetermined voltage signal. Technician B says that a coolant temperature sensor is a voltage-generating sensor. Who is correct?
Flag questioH
In order to read the voltage generated from a
Thermocouple,
Select one:
a. It should be connected to the
amplifier output that will be connected to
a millivoltmeter.
b. It should be connected directly to a
millivoltmeter.
It should be connected to an amplifier
C.
that will be connected to a millivoltmeter.
d. It should be connected to the
Thermocouple sensor socket.
If moisture, air, and thermal control are well
designed and installed, then vapor control
is not really an issue.
True/ False
Chapter 16 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 16 - True or False: Pneumatic controls are...Ch. 16 - Pneumatic controls are operated by A. water. B....Ch. 16 - One advantage of a modern control system is A....Ch. 16 - A control loop contains _______, _______, and...Ch. 16 - Pneumatic air must A. be clean and dry. B. have...Ch. 16 - The air supplied to a diaphragm is 20 psig, and...Ch. 16 - When a large volume of air is needed at a...Ch. 16 - Prob. 8RQCh. 16 - Prob. 9RQCh. 16 - An analog control signal A. has an infinite number...
Ch. 16 - Another term used to describe sensitivity in...Ch. 16 - Prob. 12RQCh. 16 - Prob. 13RQCh. 16 - One of the major components of a residential...Ch. 16 - Prob. 15RQCh. 16 - Describe a control device, and give three examples...Ch. 16 - Describe what a sensor does in a DDC system used...Ch. 16 - What is the difference between an active and a...Ch. 16 - A control system consists of what three basic...Ch. 16 - List six advantages that DDC control systems have...Ch. 16 - Describe the difference between the analog and...Ch. 16 - Describe the difference between an open-loop and a...
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- True or False: A change in the differential of a control will always change the range of the control.arrow_forwardTrue or False: Pneumatic controls are explosion-proof.arrow_forwardTrue or False? In a high-speed CAN system, a serial data bus is used to allow communication between the various control modules in a vehicle.arrow_forward
- True or False: When troubleshooting a small system, the first step is to attach the high- and low-pressure gauges.arrow_forwardAnother term used to describe sensitivity in electronic controls is A. temperature. B. gain. C. rpm. D. pressure.arrow_forwardA fixed rating pressure switch is adjusted inside the pressure control and display console to record the pressure. True or falsearrow_forward
- Which of the following lab scope controls must be set when trying to observe how long an event takes place? Intensity Vertical Horizontal Triggerarrow_forwardTrue or False: The OFFSET command cannot be used on closed objectsarrow_forwardone way flow control valve is the type of valve which is used to control the speed of an actuator. Select one: True Falsearrow_forward
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