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 4RQ
A control loop contains _______, _______, and _________.
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5. You need to know the resolution of the control. How many counts are there for 1 degree of motion?
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actuating signal;
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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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- Means that data concerning the effects of the computers commands are fed back to the computer as an input signal.arrow_forward3. Represent in block diagram form, the control system used in automatic control of speedof a steam turbine.arrow_forwardThe system will have a direct connection between the output and input.arrow_forward
- 6 Identify the system which is unreliable. a. Open loop and closed loop System b. Open loop System c. None of the above d. Closed loop systemarrow_forwardIdentify the following elements of the given closed loop control system.(i) Process Element(ii) Feedback Element (iii) Control Element (iv) Correction Elementarrow_forwardWhich type of control system is used in the given block diagram? Write the definition.arrow_forward
- The graph for on-off control mode operation is............arrow_forwardWhich of the following is correct for a open loop system ? a. Have feedback b. No comparison element c. Automatic Control system d. Use feedback elementarrow_forwardFor the following automatic control systems commonly encountered in daily life, identify the devices that perform the measurement (M), decision (D), and action (A) functions, and classify the action function as “On/Off’ or “Regulating” (time-varying until reaching a setpoint). Also, draw a sketch of the control loop for each system and determine whether the control is feedback or feedforward. Automatic sprinkler system for fires Automobile cruise speed control Refrigeratorarrow_forward
- rees) answer only ten of the following multi choice questions. 1. In CNC machine tools, the motors used to control feed rate are: A. Servo motors B. Induction motors C. Stepper motors D. Hydraulic motors 2. The purpose of a feedback device in a CNC machine tool is to provide information of: A. Speed B. Displacement C. Force D. Both speed and displacement 3. Federate on a machining center can be specified in: A. Only feed per revolution B. Either feed per minute or feed per revolution C. Only feed per minute D. Feed per tooth per revolution 4. The correct syntax of an NC block for inclined line milling operation is: A. N-G01 X-F- B. N-G01 Z---F--- C. N-G01 X-Y--F--- D. N-G01 M X Y F... 5. When the contour or continuous path system is used, A. Tool movement from one point to the next does not have to follow a specific path. B. Tool travel is controlled along ong axis at a time. C. Machine and tool movements are precisely controlled at all times and in all planes. D. None of the above. 6.…arrow_forwardWhat is the sequence to do to simulate a control system with simulink?arrow_forward11). Controllers can be divided into _____________ type, and _____________ type controllers due to their different design methods.arrow_forward
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