Automotive Maintenance and Repair Test Bank
Course Introduction
Automotive Maintenance and Repair provides students with fundamental knowledge and practical skills necessary for diagnosing, maintaining, and repairing modern automobiles. The course covers essential topics such as engine operation, brake systems, steering and suspension, electrical components, fuel systems, and preventive maintenance routines. Through theoretical instruction and hands-on lab experiences, students learn to use diagnostic tools, interpret service manuals, and apply industry-standard safety procedures. Emphasis is placed on troubleshooting common issues, performing routine inspections, and implementing repair solutions to ensure vehicle safety, reliability, and performance. This course prepares learners for entry-level positions in the automotive service industry or for further specialized training.
Recommended Textbook
Todays Technician Automotive Heating Air Conditioning Classroom Manual and Shop Manual 5th
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631 Verified Questions
631 Flashcards
Source URL: https://quizplus.com/study-set/2214 Page 2
Chapter 1: Heating and Air Conditioning - History and the Environment
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48 Verified Questions
48 Flashcards
Source URL: https://quizplus.com/quiz/44057
Sample Questions
Q1) George H.W.Bush signed the Clean Air Act ammendment of 1990 into law that placed strict regulations on CFC emissions.
A)True
B)False
Answer: True
Q2) What is the greenhouse effect?
Answer: The greenhouse effect or global warming,is the result of the release of increasing amounts of so-called 'greenhouse gases' into the atmosphere,gases such as CO ,CH4,and manmade gases such as CFC's and HFC's.These greenhouse gases act as a blanket around the earth retaining heat.
Q3) What is the air we breathe made up of?
A) 51 percent oxygen and 49 percernt nitrogen
B) 21 percent oxygen and 78 percernt nitrogen
C) 21 percent nitrogen and 78 percernt oxygen
D) 12 percent oxygen and 88 percernt nitrogen
Answer: B
Q4) What does the word toxicity mean?
Answer: poisonous quality
Page 3
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Chapter 2: Temperature and Pressure Fundamentals
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43 Verified Questions
43 Flashcards
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Sample Questions
Q1) Sensible heat can be measured with A) a pressure gauge.
B) a thermometer.
C) a scale.
D) all of the above.
Answer: B
Q2) The sun heats the earth through the process of A) convection.
B) conduction.
C) radiation.
D) all of the above.
Answer: C
Q3) All of the following are gas laws,except:
A) Charles' Law
B) Darwin's Law
C) Dalton's Law
D) Boyle's Law
Answer: B
Q4) What are the three states of matter?
Answer: Solid,liquid,and gas
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Chapter 3: Engine Cooling and Comfort Heating
Systemsdiagnosis and Service of Engine Cooling and Comfort Heating Systems
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57 Verified Questions
57 Flashcards
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Sample Questions
Q1) The engine cooling system is designed to remove about 80 percent of the total engine heat.
A)True
B)False
Answer: False
Q2) Many electric cooling fans are ultimately controlled by what device?
Answer: power train control module (PCM)
Q3) A vehicle in for repair has a burst upper radiator tank.<i>Technician A </i> says thermostat htat was stuck in the open position could be the cause.<i>Technician B </i> says that a faulty radiator pressure cap could be the cause.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Answer: B
Q4) What is the purpose of a heater core control valve?
Answer: The heater core control valve regulates coolant flow through the heater core to regulate passenger compartment temperature.
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Chapter 4: Air-Conditioning System Operating
Principlesthe Manifold and Gauge Set
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50 Verified Questions
50 Flashcards
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Sample Questions
Q1) The accumulator contains low-pressure vapor.
A)True
B)False
Q2) The metering device changes high-pressure liquid to
A) a low-pressure vapor.
B) a low-pressure liquid.
C) a high-pressure liquid.
D) any of the above, depending on the outside air temperature.
Q3) What are the names of the basic refrigerant system components?
Q4) What state is the refrigerant in the condenser?
Q5) <i>Technician A </i> says Schrader-type valves on refrigerant system service fittings self-seal when the manifold hoses are removed.<i>Technician B </i> says HFC-134a manifold hoses use quick disconnect couplers for attaching to the refrigerant system service fittings.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q6) What is the drying agent in the receiver-drier or accumulator known as?
Q7) What is the main chemical advantage of R-134a refrigerant over R-12 refrigerant? Page 6
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Page 7
Chapter 5: Refrigerant System Componentsservicing
System Components
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44 Verified Questions
44 Flashcards
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Sample Questions
Q1) What is the purpose of the evaporator?
Q2) <i>Technician A</i> says a receiver-drier is used in systems with a fixed orifice tube.<i>Technician B</i> says the receiver-drier stores reserve refrigerant.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) Tubing with a nylon lining can be used with both R-12 (CFC-12)and R-134a (HFC-134a)refrigerants.
A)True
B)False
Q4) <i>Technician A</i> says that the thermostatic expansion valve may be located anywhere between the evaporator outlet and the compressor inlet.<i>Technician B</i> says that fixed orifice tubes sizes are interchangeable in order to taylor system performance.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
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Chapter 6: Refrigerant System Servicing and
Testingair-Conditioning System Servicing and Testing
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51 Verified Questions
51 Flashcards
Source URL: https://quizplus.com/quiz/44062
Sample Questions
Q1) <i>Technician A</i> says recycled refrigerant in portable storage containers should be periodically shecked for noncondensable gas contamination.<i>Technician B</i> says contaminated refrigerant will not affect system performance..Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) <i>Technician A</i> says that the A/C system may be charge through the LOW side when the system is operating.<i>Technician B</i> says that the A/C system may be charged through the HIGH side when the system is off .Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) Refrigeration oil circulates with the refrigerant through the system.
A)True
B)False
Q4) What are the sources of refrigerant system contamination?
Q5) What is the purpose of system evacuation?
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Chapter 7: Diagnosis of the Refrigeration System
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53 Verified Questions
53 Flashcards
Source URL: https://quizplus.com/quiz/44063
Sample Questions
Q1) An R-134a expansion valve system that is properly charged has the following gauge readings,high-side 150 psig and low-side 42 psig and the ambient air temperature is 85°F.Which of the following is the most likely cause?
A) A restricted receiver drier
B) An out of adjustment temperature blend door
C) A restricted condenser
D) A stuck open expansion valve
Q2) Poor passenger compartment cooling may be the result of dirt or debris plugging the evaporator core cooling fins.
A)True B)False
Q3) An undercharged system will show which of the following gauge readings?
A) low side, low; high side, low
B) low side, low; high side, high
C) low side, high; high side, low
D) low side, high; high side, high
Q4) Moisture in a refrigerant system may cause intermittent poor system performance.
A)True B)False
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Chapter 8: Compressors and Clutches
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50 Verified Questions
50 Flashcards
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Sample Questions
Q1) <i>Technician A</i> says a replacement compressor should have the same type of clutch and pulley as the old compressor.<i>Technician B</i> says the mounting brackets and other fasteners on a replacement compressor should be identical to those on the old compressor.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) Compressor clutch controls are being discussed.<i>Technician A</i> says a clutch may be cycled on and off based on system pressure.<i>Technician B</i> says some clutches will not be cycled on-off unless the driver operates the manual air conditioning control device.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) Liquid refrigerant may cause severe damage to the compressor.
A)True
B)False
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Page 11
Chapter 9: Case and Duct Systems
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52 Verified Questions
52 Flashcards
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Sample Questions
Q1) If a vacuum reserve tank holds a vacuum for five minutes,the tank is probably good.
A)True
B)False
Q2) An odor emitting from the case and duct system may be caused by all of the following,Except:
A) Refrigerant gas leak.
B) Mold and mildew.
C) Refrigerant oil leak.
D) A leaking heater core.
Q3) Name the major components of the air distribution system.
Q4) A customer complains of the passenger compartment temperature always being too hot,cold or not changing as the temperature range is changed on the control panel.On an electronic mode door actuator (motor)system all of the following could cause this problem Except:
A) Mode door moving too freely
B) Faulty actuator
C) Open or shorted wire
D) Faulty potentiometer
Q5) How may a blend door be controlled?
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Chapter 10: System Controlsdiagnosis and Service of
System Controls
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49 Verified Questions
49 Flashcards
Source URL: https://quizplus.com/quiz/44066
Sample Questions
Q1) How does the thermostat control the in-vehicle temperature?
Q2) The stepped resistor blower speed control has four or five speed positions.
A)True
B)False
Q3) The temperature fluctuates between hot and cold on a vehicle equipped with an automatic temperature control system.Which of the following is the most likely cause?
A) A open blower motor control relay.
B) A low refrigerant charge level.
C) A faulty coolant temperature sensor.
D) A disconnected in-car temperature sensor aspirator tube.
Q4) The air conditioning compressor will not engage.When a scan tool is connected it indicates that there is no A/C request signal.<i>Technician A</i> says that the refrigerant system may have a faulty thermostatic expansion valve.<i>Technician B</i> says that an engine cooling system thermostat which is opening too soon could be the cause.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Page 13
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Chapter 11: Retrofit and Future Trends
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Sample Questions
Q1) Evacuation of an air conditioning system is being discussed.<i>Technician A</i> says one factor affecting the speed of evacuation is internal restrictions.<i>Technician B</i> says all of the oil is usually removed during evacuation.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) When should an air conditioning system be evacuated?
Q3) The air conditioning system is purged of refrigerant if the manifold gauges show a vacuum.
A)True
B)False
Q4) <i>Technician A</i> says flushing the air conditioning before retrofitting is a common procedure.<i>Technician B</i>says each component should be removed and flushed individually.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
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Chapter 12: Extenssion 1: Shop Safety
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54 Verified Questions
54 Flashcards
Source URL: https://quizplus.com/quiz/44068
Sample Questions
Q1) <i>Technician A</i> says shop ventilation is not needed when working on new vehicles because new-vehicle emissions are low.<i>Technician B</i> says the shop's ventilation system should be connected to the exhaust pipe if the engine is running.Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A or B
Q2) What should you do if battery acid gets into your eyes?
A) Blink fast to start tears.
B) Rub salve in your eyes.
C) Flush your eyes with water and go to a doctor.
D) All of the above
Q3) Ethylene glycol is essentially nontoxic.
A)True
B)False
Q4) Ethylene glycol in even small quantities can be hazardous to small children if ingested.
A)True
B)False
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Chapter 13: Extenssion 2: Typical Shop Procedures and Tools
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35 Verified Questions
35 Flashcards
Source URL: https://quizplus.com/quiz/44069
Sample Questions
Q1) What is your employer expected to supply first and foremost?
Q2) OSHA was established to improve workers wages.
A)True
B)False
Q3) MACS stands for Modern Automotive Control Systems. A)True
B)False
Q4) No special equipment is required to service HFC-134a (R-134a)refrigerant systems. A)True
B)False
Q5) <i>Technician A </i> says to use the VIN to collect the correct repair information.<i>Technician B </i>says repair procedures will cover diagnostic routines and methods to perform the repair.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q6) What is a manifold and gauge set?
16
Q7) What are the four basicemployee obligations?
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