Electricity for Refrigeration, Heating, and Air Conditioning
9th Edition
ISBN: 9781285179988
Author: Russell E. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 9, Problem 44RQ
What precautions should be taken when checking hermetic compressor motors?
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What is the purpose of the internal overload protector inthe compressor motor?
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The two types of motors used for hermetic compressorsare _________ and _________.
Chapter 9 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning
Ch. 9 - What is magnetism?
Ch. 9 - How is an electromagnet produced?
Ch. 9 - Which of the following correctly lists the motor’s...Ch. 9 - Prob. 14RQCh. 9 - Prob. 15RQCh. 9 - Prob. 16RQCh. 9 - Prob. 17RQCh. 9 - Prob. 18RQCh. 9 - Prob. 19RQCh. 9 - Prob. 20RQ
Ch. 9 - Prob. 21RQCh. 9 - What is the unit of measurement for the strength...Ch. 9 - Prob. 23RQCh. 9 - Prob. 24RQCh. 9 - List the five capacitor replacement rules.
Ch. 9 - Prob. 26RQCh. 9 - Prob. 27RQCh. 9 - What are the advantages and disadvantages of using...Ch. 9 - Prob. 29RQCh. 9 - Prob. 30RQCh. 9 - Prob. 31RQCh. 9 - True or False: All starting apparatuses are...Ch. 9 - Prob. 33RQCh. 9 - Which of the following is the capacitance of an...Ch. 9 - Which of the following is the capacitance of two...Ch. 9 - If a capacitor produces 15 ampere on a 240-volt...Ch. 9 - Which of the following capacitors could be used to...Ch. 9 - Which of the following capacitors could be used to...Ch. 9 - Which of the following capacitors or combination...Ch. 9 - Which of the following capacitors or combination...Ch. 9 - Find the common, start, and run terminals of the...Ch. 9 - Briefly explain the procedure for troubleshooting...Ch. 9 - What are the electrical failure categories for...Ch. 9 - What precautions should be taken when checking...Ch. 9 - Prob. 45RQCh. 9 - Prob. 46RQCh. 9 - Explain the construction of an ECM.
Ch. 9 - An ECM is a __________.
three-phase, AC...Ch. 9 - True or False: The resistance readings of the...Ch. 9 - True or False: The line voltage power supply of an...
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- How does power pass through the compressor shell to the motor inside?arrow_forwardWhich style of compressor uses belts to turn the compressor? A. Open drive B. Closed drive C. Chassis drive D. Hermetic drivearrow_forwardWhat two factors determine the amount of voltage produced by a thermocouple?arrow_forward
- What is meant by regulator creep?arrow_forwardThe A/C compressor cycles rapidly, and air coming from the vents is only slightly cool. Technician A says the problem could be a low refrigerant charge. Technician B says the problem could be a defective thermostatic switch. Who is right? Group of answer choices Technician A Technician B Both A and B Neither A nor B PreviousNextarrow_forwardWhat are the advantages of alternators over generators?arrow_forward
- Which of the following is electrically connected in series with the compressor electromagnetic clutch? Ambient temperature switch Thermostatic switch Pressure cycling switch All of the abovearrow_forwardWhen should a service technician use the subcooling method of charging air-conditioning and heat pump systems?arrow_forwardWhy is the hermetic compressor motor manufactured from special materials?arrow_forward
- How are the electrical components checked on a hermetic compressor?arrow_forwardOn multi-spool engines milliammeter type vibration transducer is used electro-magnetic type vibration transducer is used crystal-type vibration transmitter is usedarrow_forwardThe reversing-valve solenoid is energized on the _ cycle.a - heatingb - coolingarrow_forward
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