Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 54, Problem 14RQ
Which of the following oils is used in an original equipment R-134a system?
- Mineral oil
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Chapter 54 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 54 - What is the amount of heat necessary to change the...Ch. 54 - What type of electromagnetic clutch is used in...Ch. 54 - Describe four ways in which the heater control...Ch. 54 - What is the purpose of the compressor clutch...Ch. 54 - What does change of state mean? And why is it...Ch. 54 - What state is the refrigerant in when it leaves...Ch. 54 - What causes condensed water to leak from the air...Ch. 54 - On which of the following laws of nature is the...Ch. 54 - Which of the following statements is true?...Ch. 54 - Which of the following statements is false? The...
Ch. 54 - Which of the following statements about PTC...Ch. 54 - Which of the following is electrically connected...Ch. 54 - Explain why a diode may be wired into the compres...Ch. 54 - Which of the following oils is used in an original...Ch. 54 - A heating system includes all of the following...Ch. 54 - Technician A says that a great amount of heat is...Ch. 54 - Technician A says that suction lines become very...Ch. 54 - While discussing the reasons the use of R-134a is...Ch. 54 - While discussing the reaction by a refrigerant to...Ch. 54 - While discussing solar sensors: Technician A says...Ch. 54 - While discussing the future use of CO2 as a...Ch. 54 - Technician A says that when the A7C system is off,...Ch. 54 - Technician A says that when the refrigerant is...Ch. 54 - A heater does not supply enough heat and the...Ch. 54 - While discussing relative humidity: Technician A...
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- While checking for conditions that might cause coolant electrolysis: Technician A places the positive lead of a voltmeter into the coolant and connects the negative lead to a ground. Technician B checks for the presence of voltage in the coolant with the ignition off. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhile checking the condition of a cars ATF: Technician A says that if the fluid has a dark brownish or blackish color and/or a burned odor, the fluid has been overheated. Technician B says that if the fluid has a milky color, this indicates that engine coolant has been leaking into the transrnissions cooler. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardTrue or False? The air bag diagnostic monitor supplies back-up power to the air bag module in the event that the battery or cables are damaged during the accident.arrow_forward
- True or False? All engine coolants contain some phosphates, which make them unfriendly to the environment.arrow_forwardTechnician A says that used engine coolant should be collected and recycled. Technician B says that all oil- based waste materials can be collected in the same container if an approved waste disposal company is hired to rid the shop of the oil. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardTechnician A labels or marks all electrical wires before disconnecting them. Technician B labels or marks all vacuum hoses and verities the connections to the underhood decal before disconnecting them. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- True or False? The first step in removing an engine is usually the removal of the intake and exhaust manifolds.arrow_forwardTrue or False? The powdery substance released from the air bag when it is deployed is sodium hydroxide, which can cause skin irritation.arrow_forwardWhile checking the condition of a vehicles ATF: Technician A says that if the fluid has a burnt color or odor, the fluid has been overheated. Technician B says that a milky color indicates that engine coolant has been leaking into the transmissions cooler in the radiator. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Which of the following is a function of the engines lubrication system? Holds an adequate supply of oil Removes contaminants from the oil Delivers oil to all necessary areas of the engine All of the abovearrow_forwardTechnician A says that vacuum hose routing for the entire vehicle is illustrated on the underhood decal. Technician B says that this decal illustrates emission system vacuum hose routing. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardthe General steps required to change the oil in a vehicle?arrow_forward
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