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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Textbook Question
Chapter 6, Problem 6RQ
What is the name of an appliance that is used to remove moisture?
- a. humidifier
- b. dehumidifier
- c. air conditioner
- d. both a and c
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Chapter 6 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 6 - Why should an air-conditioning technician learn to...Ch. 6 - Briefly explain the layout of a schematic diagram.Ch. 6 - Most schematic diagrams are made up of _____. a....Ch. 6 - Schematic diagrams break the wiring of control...Ch. 6 - Draw the symbols for the following components. a....Ch. 6 - What is the name of an appliance that is used to...Ch. 6 - What is the position of the control switch if the...Ch. 6 - Prob. 8RQCh. 6 - True or False: The evaporator fan motor is...Ch. 6 - What electrical component initiates the defrost...
Ch. 6 - The thermostat of the commercial freezer in Figure...Ch. 6 - What is the purpose of the fan switch in Figure...Ch. 6 - If the temperature in the furnace schematic shown...Ch. 6 - What is the purpose of the transformer in Figure...Ch. 6 - True or False: The system in Figure 6.28 is using...Ch. 6 - The HP and LP switches are connected in __________...Ch. 6 - The contactor is controlled by __________. a. the...Ch. 6 - With the fan switch in the on position, the indoor...Ch. 6 - The compressor and condenser fan motor start...Ch. 6 - The compressor and condenser fan motor are...Ch. 6 - Prob. 21RQCh. 6 - Prob. 22RQCh. 6 - Explain why the lockout relay coil energizes...Ch. 6 - True or False: The first- and second-stage cooling...Ch. 6 - True or False: A two-stage cooling thermostat...Ch. 6 - What is the purpose of the defrost cycle of a heat...Ch. 6 - What two factors initiate the defrost mode in the...Ch. 6 - What type of thermostat is used with the heat pump...Ch. 6 - Explain the operation of the switchover valve and...Ch. 6 - The reversing-valve solenoid is energized on the...Ch. 6 - The defrost cycle of the heat pump schematic in...Ch. 6 - What is a pump-down system and why is it used in...
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- Which of the following statements best defines the term evacuation? A process in which the refrigerant in a system is released. A condition that exists when a compressor runs until there is no refrigerant left in the system. The process that pulls all traces of air and moisture from the system. A process that uses air to force moisture and dirt out of the system.arrow_forwardc) Explain the layout and the basic operation of a centralized air conditioning system(or chiller system).arrow_forwardWhich of the following gases is the least dense? A.oxygen B.helium C.carbon dioxide D.argonarrow_forward
- I need the answer as soon as possiblearrow_forwardWhich of the following is/are a necessary part of a liquefaction process? a.all of these b.an expansion process c.throttle d.a heat exchangerarrow_forwardWhich of the following systems generate more energy when used in industrial applications? a. pneumatic systems b. hydraulic systems c. none of the listed d. both systems generate same energyarrow_forward
- In cooling tower the blow down loss means a. the total water loss due to blowing of very fast air in cooling tower. b. the water loss due to leakges c. the water loss in the form of droplets d. the water loss to control impurities and saltsarrow_forwardThe plenum-mounted humidifier is installed in the ____plenum. A. supply B. return C. supply or returnarrow_forwardWhat should be done to prevent excessive deposits and buildup within the cooling system? Select one: a. Replace the coolant filter often b. Flush or replace coolant every year c. Use cold tap water when mixing antifreeze and water d. Use distilled water when mixing antifreeze and waterarrow_forward
- 10. A crankcase heater is used to warm a compressor to prevent the condensing of the crankcase. A. moisture inside B. moisture outside C. oil inside -D. refrigerant insidearrow_forwardWhen condenser tubes become fouled, they may be cleaned by A. using a steel brush. B. using a brass brush. C. using a chisel and hammer. D. running a mixture of sand and water through them.arrow_forwardA vehicle is having its water pump replaced. When the water pump is removed, severe corrosion is found on the water pump impeller, and inside the engine. Technician A states that the radiator cap may be overpressurizing the system. Technician B states that the vehicle may have been run with 100% water in the cooling system for some time. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forward
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