Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 54, Problem 6ASRQ
While discussing the future use of CO2 as a refrigerant: Technician A says that CO2 is nontoxic and presents little threat to the environment. Technician B says that only slight changes from conventional systems will be required because CO2 systems operate at low pressures and temperatures. Who is correct?
- Technician A only
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While discussing the reaction by a refrigerant to heat: Technician A says that to absorb heat, the temperature and pressure of the refrigerant are kept low. Technician B says that to dissipate heat, the temperature and pressure are kept high. Who is correct?
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3-Technician A says that if the PCV valve or connecting hoses become clogged, excessive pressure will develop in the crankcase and can cause oil leaks. Technician B says that if the PCV valve or connecting hoses become clogged, oil may be pushed into the air cleaner or cause it to be drawn into the intake manifold. Who is correct?
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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
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- The standard that a refrigerant must meet after it has been reclaimed and before it can be sold to another owner is A. ANSI 7000. B. ANSI 700. C. EPA 7000. D. AHRI 700.arrow_forwardWhich 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_forwardOne ton of refrigeration is A. 1200 Btu. B. 12,000 Btu/h. C. 120,000 Btu. D. 120,000 Btu/h.arrow_forward
- Technician A says that the presence of oil around a fitting of an air-conditioning line may indicate an oil leak but not a refrigerant leak. Technician B says that using an electronic leak detector is the best way to find the source of a refrigerant leak. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardA technician is inspecting a vehicle and finds the upper radiator hose is collapsed, and the cooling system pulled into a vacuum when cold. Technician A states that a leak in the surge tank could be the cause. Technician B states that the radiator cap is most likely defective. 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_forwardDehumidifier is an example of which of the following? Closed System Open System Isolated System None of the abovearrow_forward
- 1.During a refrigerant system performance test the following results are recorded: outside ambient temperature of 908F, high-side gauge reading of 145 psi, and low pressure gauge reading of 14 psi. What is indicated by these results? A. Faulty refrigerant compressor B. Normal refrigerant system operation C. Low refrigerant levels D. A restriction on the high side of the refrigerant system 2. A customer complains of poor air-conditioning cooling performance. During a system performance test, the low-side gauge reading is 50 psig; the high-side gauge reading is 310 psig; and the ambient air temperature is 818F (27.228C). What is the least likely cause of the above results? A. Restricted airflow through condenser B. Refrigerant overcharge C. Refrigerant undercharge D. Overcharge of refrigerant oil I NEED BOTH QUESTION TYPED ANSWER PLEASE DETAIL ANSWERarrow_forwardAn overheating vehicle is being discussed. Technician A states that the vehicle may be overheating because the heater control valve is stuck closed. Technician B states that the vehicle may be overheating because the PCM in not energizing the cooling fan relay. 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_forwardI need the answer as soon as possiblearrow_forward
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