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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Textbook Question
Chapter 16, Problem 11RQ
Another term used to describe sensitivity in electronic controls is
A. temperature.
B. gain.
C. rpm.
D. pressure.
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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_forwardA major disadvantage of on/off control is that it cannot work for applications requiring very small changes from the set point (sp) a. true b. falsearrow_forwardChoose the statements that best describe an on/off pressure control system. a. valve position is either fully on or fully off b. can cause rapid switching of valve positions c. maintains pressure between upper and lower limits d. valve position is between fully on or fully off e. maintains pressure at a specified setpoint f. uses a controller with tuning parametersarrow_forward
- 1. Pick up 2 types of pneumatic control components given in the lesson. Explain the specific application of the control element in the industry?2. What is the difference between a pilot operated valve from that a solenoid operated valve?arrow_forwardWhat is the effect of underdamped system?arrow_forward13 - In a facility, it is desired to control the pitch and tooth diameter of the manufactured part. Which control instrument should be used for this purpose? A) Taper Gauge B) Screw Gauge C) Plug Gauge D) Johansson's Gauge E) Snap Gaugearrow_forward
- Presence detectors, thermostat and pressure plate are not examples of automated systems. Select one: True Falsearrow_forwardA) Using electro-pneumatic control method Draw the circuit of operation (the pneumatic circuit and electrical control circuit ) to run one pneumatic double acting piston cylinder actuator continuously , showing clearly each component in the circuit ?arrow_forwardHow many control parameters have to be specified in a PID controller? 1 none 2 4. 3 Which would be a suitable measuring device for composition control? spectrophotometer thermocouple orifice meter differential pressure cell This control system component is considered the “brain” of the system. controller measuring device final control element processarrow_forward
- Ultrasonic level sensors operate in a open control system. a. true b. falsearrow_forwardOne advantage of a modern control system is A. simplicity. B. faster response. C. ability to modulate. D. that they are less expensive.arrow_forward24- Identify the output device which is connected to a controller in which all the control actions are performed by a microcontroller. a. Strain gauge b. Valve c. LVDT d. Proximity switcharrow_forward
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