Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Question
Chapter 8, Problem 14RQ
To determine
The correct option for the application of the shaded pole motor.
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Guide Questions:
1. What are the stationary parts of a motor? Why are they not moving?
2. What are the moving parts of the motor? Why are they moving??
3. In your opinion, can electric motors work underwater? Explain further.
Which of the following is a symbol of an air motor in one direction with invariable capacity is
A motor is operating a load that requires a torque of 750 pounds per inch and is turning at a speed of 1575 RPM. How much horsepower is the motor producing?
Chapter 8 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 8 - What is magnetism?
Ch. 8 - How is an electromagnet produced?
Ch. 8 - Which of the following correctly lists the motor’s...Ch. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - Prob. 20RQ
Ch. 8 - Prob. 21RQCh. 8 - What is the unit of measurement for the strength...Ch. 8 - Prob. 23RQCh. 8 - Prob. 24RQCh. 8 - List the five capacitor replacement rules.
Ch. 8 - Prob. 26RQCh. 8 - Prob. 27RQCh. 8 - What are the advantages and disadvantages of using...Ch. 8 - Prob. 29RQCh. 8 - Prob. 30RQCh. 8 - Prob. 31RQCh. 8 - True or False: All starting apparatuses are...Ch. 8 - Prob. 33RQCh. 8 - Which of the following is the capacitance of an...Ch. 8 - Which of the following is the capacitance of two...Ch. 8 - If a capacitor produces 15 ampere on a 240-volt...Ch. 8 - Which of the following capacitors could be used to...Ch. 8 - Which of the following capacitors could be used to...Ch. 8 - Which of the following capacitors or combination...Ch. 8 - Which of the following capacitors or combination...Ch. 8 - Find the common, start, and run terminals of the...Ch. 8 - Briefly explain the procedure for troubleshooting...Ch. 8 - What are the electrical failure categories for...Ch. 8 - What precautions should be taken when checking...Ch. 8 - True or False: The control module determines the...Ch. 8 - Explain the operation of the direct current motor...Ch. 8 - Prob. 47RQCh. 8 - Prob. 48RQCh. 8 - Explain the construction of an ECM.
Ch. 8 - An ECM is a __________.
three-phase, AC...Ch. 8 - True or False: The resistance readings of the...Ch. 8 - True or False: The line voltage power supply of an...
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- Describe the basic difference between a DC motor and a DC generator.arrow_forwardWhy is the hermetic compressor motor manufactured from special materials?arrow_forwardProblem 5 1. Where and why is a centrifugal switch used in a split-phase motor? 2. Why and where is a capacitor used in the single-phase AC motor? 3. What type of motor would you select to perform each of the following jobs? (a) Electric drill: (b) Refrigerator: (c) Hair driers and desk fans: (d) Air Conditioner Fan: (e) XY plotters and printers: (f) Electric clock:arrow_forward
- In a brushless DC motor, the (rotor, stator) is a permanent magnet.arrow_forwardA motor is operating a load that requires a torque of 750 lb–in and is turning at a speed of 1,575 RPM. How much horsepower is the motor producing?arrow_forwardTo supply combustion air, a forced draft fan requires 1975 rpm at 4.8 lb-ft. What horse power rating is required for the electric motor driver?arrow_forward
- In servo motors, the position is determined by: a. The frequency of the PWM signal. b. The amplitude of the PWM signal. c. The duty cycle of the PWM signal.arrow_forward6. Which of the following is a trait of stationary-blade 6. Which of the following is a trait of stationary-blado rotary compressors? A. The blade is mounted on the rotor. B. The blade is pulled into contact with the rotor by centrifugal force. C. The rotor is mounted on an eccentric shaft. D. All of the above.arrow_forwardWhich of the following is used as starter for a gas turbine O a. An auxiliary electric motor O b. A compressor O c. Heat exchanger O d. Low pressure turbinearrow_forward
- Explain the functions of a steam generatorarrow_forwardAn open single-phase motor with a centrifugal starting switch may not be used in A. an air-conditioning condenser fan motor. B. an air-conditioning indoor air handler. C. an area where explosive gases exist. D. a ventilating fan motor.arrow_forwardWhy can a multispeed fan motor be operated at lower speed than most induction motors without harm to the motor windings?arrow_forward
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