Automotive Maintenance and Repair Test Bank
Course Introduction
This course provides students with the foundational knowledge and practical skills required for the maintenance and repair of modern automobiles. Topics include engine systems, electrical and electronic systems, brake and suspension components, transmission, and routine preventive maintenance. Students will learn to diagnose common automotive problems using industry-standard tools and procedures, perform basic repairs and component replacements, and understand safety protocols in automotive workshops. The course also covers interpreting technical manuals, following manufacturer service guidelines, and staying updated with advancements in automotive technology. Through hands-on lab work and theoretical lessons, students gain real-world experience to prepare for careers in automotive service and repair.
Recommended Textbook Todays
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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) What is the common name or number used for the hydro-fluorocarbon (HFC)refrigerant used in automotive refrigerant systems today?
Answer: R134a
Q2) The most common gas in the earth's atmosphere is oxygen.
A)True
B)False
Answer: False
Q3) Ozone has the same chemical properties as carbon monoxide.
A)True
B)False
Answer: False
Q4) Describe what is contained in a Material Safety Data Sheet (MSDS).
Answer: Safety information about materials,including toxicity levels,physical characteristics,protective equipment requirements,emergency procedures,and compatibility with other substances.
Q5) What is the main ingredient of most automotive coolants?
Answer: Ethylene Glycol
Q6) What does SNAP stand for?
Answer: Significant New Alternatives Policy
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Chapter 2: Temperature and Pressure Fundamentals
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43 Flashcards
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Sample Questions
Q1) 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
Q2) What is the unit of measurement used to measure latent heat?
Answer: The unit of measurement used to measure latent heat is the British thermal unit (Btu).
Q3) The metric term for pressure (psi)is
A) Kilogram (kg).
B) KiloPascal (kPa).
C) Liter per millimeter (Lm).
D) Liter per centimeter (Lc).
Answer: B
Q4) Gravity causes warm air to sink.
A)True
B)False Answer: False
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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 Flashcards
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Sample Questions
Q1) Why is it important to have a good engine coolant fan at idle and low speeds?
Answer: To pull sufficient air through the condenser,radiator,and across the engine for adequate cooling when there is no ram air effect
Q2) What is the purpose of the automotive cooling system?
Answer: The purpose of the automotive cooling system is to carry the heat that is generated by the engine during the combustion process away from the engine to maintain a near constant engine operating temperature during varying engine speeds and operating conditions.
Q3) The two basic design types of radiators are
A) down flow and cross flow.
B) up flow and down flow.
C) cross flow and recirculating flow.
D) up flow and cross flow.
Answer: A
Q4) A thermostat is not needed if the vehicle is only driven for short distances.
A)True
B)False
Answer: False
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Chapter 4: Air-Conditioning System Operating
Principlesthe Manifold and Gauge Set
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Sample Questions
Q1) <i>Technician A </i> says the air conditioning system is designed to remove heat from the passenger compartment.<i>Technician B </i> says the air conditioning system is designed to tranfer heat absorbed to the outside air.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) A modern air conditioner system will have either an accumulator or a receiver-drier but not both.
A)True
B)False
Q3) When the air conditioning system is operating all of the following happens inside the evaporator,EXCEPT:
A) the refrigerant removes heat from the outside air.
B) the refrigerant changes from a vapor to a liquid.
C) heat entering the refrigerant causes it to change state.
D) the refrigerant absorbs heat.
Q4) What is the main chemical advantage of R-134a refrigerant over R-12 refrigerant?
Q5) Where is the refrigerant system desiccant located?
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Chapter 5: Refrigerant System Componentsservicing
System Components
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Sample Questions
Q1) Describe what happens to the refrigerant within the evaporator.
Q2) A leaking evaporator is being replaced.<i>Technician A</i> says the new o-rings should be coated with clean refrigerant oil.<i>Technician B</i> says the some refrigerant oil shoud be added to the system prior to recharging the system.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) Before attempting to service an automotive air-conditioning system consider all of the following Except:
A) Can customer afford the repair?
B) Do you have the proper tools and equipment to service the system?
C) Listen to customer complaint.
D) Does your diagnosis make sense based on customer complaint.
Q4) If the refrigerant system is suspected of being contaminated with moisture what component should also be replaced?
Q5) What effect will bent cooling fins on the condenser have on the refrigerant system?
Page 7
Q6) Describe the two major functions of the air conditioning system compressor.
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Chapter 6: Refrigerant System Servicing and
Testingair-Conditioning System Servicing and Testing
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51 Verified Questions
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Sample Questions
Q1) Explain why leaks at the service ports are often missed.
Q2) System malfunctions cannot be detected by visual inspection.
A)True
B)False
Q3) A technician is checking the evaporator for leaks on an R-134a refrigerant system.<i>Technician A</i> says that it is acceptable to use shop air to pressurize the system and use an electrnic microphone to listen for leakage.<i>Technician B</i> says that it is acceptable to charge the system with R-134a and then insert the elctronic leak detector probe in the evaporator drain.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q4) Define hot and cold refrigerant leaks.
Q5) When evacuating the system,what position should all service valves and manifold gauge valves be in?
Q6) What two factors determine the amount of moisture removed from an air conditioning system?
Q7) Explain the difference between refrigerant recovery,reclaiming,and recycling.
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Chapter 7: Diagnosis of the Refrigeration System
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Sample Questions
Q1) Poor passenger compartment cooling may be the result of dirt or debris plugging the evaporator core cooling fins.
A)True
B)False
Q2) What may happen if the expansion valve remote bulb is not making contact with the evaporator outlet tube?
Q3) If the low-side gauge pressure is showing a vacuum,all of the following defects could be the cause,EXCEPT:
A) clogged inlet screen.
B) expansion valve stuck closed.
C) compressor valves worn.
D) moisture in the system.
Q4) By comparison what are the different pressure characteristics of R-134a refrigerant compared to R-12 refrigerant?
Q5) What should you do first before condemning a refrigerant system component?
Q6) What are most restrictions in a refrigerant system are caused by?
Q7) What can a defective compressor cause systems pressures to be?
Q8) What is the primary cause of corrosion in the air-conditioning system?
Q9) How is a baseline used in a refrigerant system diagnosis test?
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Chapter 8: Compressors and Clutches
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Sample Questions
Q1) Why have many older compressor designs been discontinued even though they worked well?
Q2) <i>Technician A</i> says when the compressor oil is drained,the oil can be reused if it looks good.<i>Technician B</i> says the type of new oil installed or added is not important as long as the compressor has enough oil.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) If the compressor oil has been drained and it shows signs of metallic particles,all of the following should be done,EXCEPT:
A) The entire system should be flushed.
B) The receiver-drier or accumulator should be replaced after flushing.
C) All system inlet screens should be cleaned after flushing.
D) A full charge of heavier refrigeration oil should be added after flushing.
Q4) What type of refrigerant compressor designs are used on Hybrid Electric vehicles?
Q5) What is the one moving part in a scroll compressor.
Q6) Why is it important that the compressor seals not be touched with the fingers?
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Chapter 9: Case and Duct Systems
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52 Verified Questions
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Sample Questions
Q1) 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
Q2) <i>Technician A</i> says a bi-directional mode door actuator may control the mode doors.<i>Technician B</i>says a positive pressure is usually maintained within the passenger compartment.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) During normal air conditioning system operation,system mode doors are
A) fully opened.
B) fully closed.
C) partially closed.
D) all of the above, depending on the mode selected.
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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) 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
Q2) Why is a diode used in the clutch coil circuit?
Q3) Electronic control heads are being discussed.<i>Technician A</i> says all units have a connection to use a scan tool or diagnostic tool.<i>Technician </i> says the different brands use the same trouble code to indicate the same failure.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q4) What causes a thermistor to change resistance value?
Q5) What is the major disadvantage of the telltale light system?
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Chapter 11: Retrofit and Future Trends
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45 Verified Questions
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Source URL: https://quizplus.com/quiz/44067
Sample Questions
Q1) During the charging process of a FOT cycling-clutch system,how can you override the system so the compressor will stay engaged and not cycle?
Q2) <i>Technician A</i> says mineral oil is compatible with R-12.<i>Technician B</i> says mineral oil is compatible with R-134a.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) A refrigerant retro fit label must contain all of the following,Except:
A) The refrigerant charge amount installed.
B) The amount of R-12 removed from the system.
C) The type of refrigerant oil installed and the part number.
D) Name and address of the installer who performed the retrofit.
Q4) Discuss the use of conversion service fittings for conversions of R-12 to R-134a refrigerant.
Q5) Under what conditions should hoses be replaced during a retrofit?
Q6) When should an air conditioning system be evacuated?
Q7) What is the maximum capacity a recovery cylinder should be filled to at ambient temperatures.
Page 13
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Chapter 12: Extenssion 1: Shop Safety
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Sample Questions
Q1) <i>Technician A</i> says MSDS sheets are required for all chemicals used or stored on the premises.<i>Technician B</i>says the MSDS lists the protective clothing or equipment for that material.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 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
Q3) List five examples of when proper eye protection should be worn.
Q4) Explain what carbon monoxide is and where it comes from in the automotive industry.
Q5) What action must be taken immediately when a chemical gets in the eyes.
Q6) What does the word toxicity mean?
Page 14
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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) <i>Technician A </i> says the high-side gauge on the manifold gauge set is on the left and has a red housing.<i>Technician B </i> says the low-side gauge on the manifold gauge set is on the left and has a green housing.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) Service procedures generally provide information in a step-by-step sequence based on manufacturer recommendations.
A)True
B)False
Q3) <i>Technician A </i> says a service information system may include estimating and shop management software.<i>Technician B </i> says service information you find on the internet is the most accurate information.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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