Automotive Technology Test Questions
Course Introduction
Automotive Technology is a comprehensive course that introduces students to the fundamentals of vehicle systems, diagnostics, and repair. This course covers key topics such as internal combustion engines, electrical and electronic systems, transmission, brakes, steering, suspension, and emerging technologies found in modern vehicles. Students gain hands-on experience with industry-standard tools and diagnostic equipment, preparing them for careers in automotive service and maintenance. Emphasis is placed on safety procedures, problem-solving skills, and the latest advancements in automotive engineering, including hybrid and electric vehicle technology.
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Todays Technician Automotive Heating Air Conditioning Classroom Manual and Shop Manual 5th
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13 Chapters
631 Verified Questions
631 Flashcards
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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) Name some effects of ultraviolet radiation.
Answer: Ultraviolet radiation can be damaging to living organisms,causing sunburn; skin cancer; damage to eyes,including cataracts; and premature aging and wrinkling of the skin.UV radiation can also break down the food chain by destroying plankton in the ocean and depriving certain species of their natural food.Plant life and crops can also be harmed or destroyed by excessive radiation.
Q2) What is the maximum temperature that a refrigerant cylinder is designed to be subjected to?
Answer: 130°F
Q3) <i>Technician A</i> says ozone is both created and destroyed by the action of UV radiation on oxygen molecules.<i>Technician B</i> says chlorine is the major gas causing the destruction of ozone.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Answer: C
Q4) What does SNAP stand for?
Answer: Significant New Alternatives Policy
Page 3
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Chapter 2: Temperature and Pressure Fundamentals
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43 Flashcards
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Sample Questions
Q1) Heat flows from a hot object to an object containing less heat.
A)True
B)False
Answer: True
Q2) <i>Technician A</i> says latent heat cannot be felt.<i>Technician B</i> says latent heat cannot be measured with a thermometer.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Answer: C
Q3) Briefly define the term voltage.
Answer: Voltage (V)or electromotive force (EMF)is the electrical pressure and is measured in volts (V); it may be either direct current (DC)or alternating current (AC)
Q4) Humidity refers to the amount of heat in the air.
A)True
B)False
Answer: False
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4
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) All of the following statements about engine cooling systems are true EXCEPT:
A) Electric cooling fans may turn on even when an engine is not running.
B) Extended life coolant is rated to last in excess of 100k miles.
C) Extended life coolant and standard life coolant are both ethylene glycol based.
D) It is ok for a technician to install a thermostat with a low temperature rating than the original thermostat.
Answer: D
Q2) After a vehicle has been driven for 10-15 miles,the heater still continues to blow cool air.Which of the following is the most likely cause?
A) Faulty water pump impellers.
B) Partially blocked radiator.
C) Thermostat stuck closed.
D) Partially blocked heater core.
Answer: D
Q3) Name the common engine antifreezes in use today.
Answer: Standard ethylene glycol,extended life ethylene glycol,propylene glycol
Q4) Many electric cooling fans are ultimately controlled by what device?
Answer: power train control module (PCM)
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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) What is R-134a chemically? It is referred to as what?
Q2) What is the function of the refrigerant condenser?
Q3) What is the main chemical advantage of R-134a refrigerant over R-12 refrigerant?
Q4) Explain why low pressure must be maintained in the evaporator.
Q5) All of the following statements about the air conditioning circuit are true,EXCEPT:
A) Heat transfer is accomplished by two pressure and two temperature systems.
B) Any time there is a pressure change, there is a temperature change.
C) A pressure-temperature change can cause a change of state.
D) On the low-pressure side, the change is from a vapor to a liquid.
Q6) The metering device changes high-pressure liquid into a
A) low-pressure liquid.
B) high-pressure vapor.
C) low-pressure vapor.
D) Any of the above, depending on the outside air temperature.
Q7) An air conditioning system with an expansion valve will also have a ______.
Q8) The basic diagnostic tool used on a refrigerant system is the?
Q9) The receiver-dryer is located on the low-pressure side of the system.
A)True
B)False 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) Removing spring lock fittings on refrigerant lines requires a special tool.
A)True
B)False
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) What is the function of the orifice tube?
Q4) The EPA requires the replacement of hoses or seals during the retrofit of a vehicle from R-12 to R-134a.
A)True
B)False
Q5) Why is the remote bulb of a thermostatic expansion valve attached with insulated tape to the refrigerant line?
Q6) What is a barrier hose and when must one be used?
Q7) Define <i>heat load</i>.
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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
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Sample Questions
Q1) <i>Technician A</i> says "intent to vent" means the technician is working in a shop without adequate ventilation.<i>Technician B</i> says "intent to vent" means the technician is working on an air conditioner in a shop that does not have a recovery machine for each type of refrigerant being serviced.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) What is formed when refrigerants react chemically with water?
Q3) When evacuating the system,what position should all service valves and manifold gauge valves be in?
Q4) <i>Technician A</i> says the performance test is a way of measuring system pressures.<i>Technician B</i> says the performance test is a way of measuring the outside humidity.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q5) Explain why leaks at the service ports are often missed.
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Chapter 7: Diagnosis of the Refrigeration System
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53 Verified Questions
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Sample Questions
Q1) Which of the following is NOT a symptom of an overcharged air conditioning system?
A) Compressor cycles rapidly when equipped with a cycling-clutch pressure switch
B) Higher than normal high-side pressures
C) Reduced cooling capacity under any load condition
D) Early compressor failure
Q2) O-ring damage could be caused by
A) overtightening.
B) burrs on the fitting.
C) using the wrong type of O-ring.
D) all of the above.
Q3) On a cycling-clutch system,the desired average temperature of the evaporator should be about 35°F (1.7°C).
A)True
B)False
Q4) What could happen if the evaporator pressure becomes too low?
A) Moisture in the system will cause the expansion valve to freeze.
B) Moisture will freeze on the evaporator surface restricting air flow.
C) Liquid refrigerant will damage the compressor.
D) Excessive temperature and pressure extremes will damage the evaporator.
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Chapter 8: Compressors and Clutches
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Sample Questions
Q1) A vehicle returns to the shop for a repeat failure of the compressor system due to compressor clutch slippage and overheating.Which of the following is the most likely cause?
A) A loose drive belt
B) High resistence in the comprssor clutch electrical circuit.
C) A low refrigerant charge level.
D) A faulty compressor clutch diode.
Q2) <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
Q3) Compressor oil level should be checked routinely.
A)True
B)False
Q4) How are all air conditioning compressor clutches applied and released?
Q5) 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
52 Flashcards
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Sample Questions
Q1) <i>Technician A</i> says a check valve allows flow in one direction only.<i>Technician B</i> says a check valve blocks flow in one direction only.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q2) Mode door adjustments are being discussed.<i>Technician A</i> says the vacuum motor can be adjusted for motor stroke.<i>Technician B</i> says a cable can be adjusted for full movement of the door.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) A blower motor resistor block may become very hot.
A)True
B)False
Q4) Why may the air conditioning compressor be on in the defrost (DEF)position?
Q5) Why is it desirable to provide a slightly positive in-vehicle pressure?
Q6) Name the major components of the air distribution system.
Page 12
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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) On an automatic temperature control system that will not hold the temperature set at the control panel,what should the technician do first?
A) Replace the incar temperature sensor.
B) Replace the the temperature mode door actuator.
C) Refer to the appropriate manufacuterer service information.
D) Recover and recharge the A/C system.
Q2) Major circuits are protected by a fusible link or maxi-fuse.
A)True
B)False
Q3) A rattling noise is heard when the engine is running and the air conditioning is off.<i>Technician A</i> says this may be caused by a too narrow gap between the compressor's armature and rotor.<i>Technician B</i> says a quick accurate test is to switch on the air conditioning to see if the noise stops.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q4) Why can the high- and low-side temperature switches be used to measure system pressures?
Page 13
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Chapter 11: Retrofit and Future Trends
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Sample Questions
Q1) 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.
Q2) <i>Technician A</i> says that the shop that performed the A/C system retrofit must be identified on the retrofit label.<i>Technician B</i>says that the new refrigerant installed must be identified on the retrofit label.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q3) The retro fit label's background color for R-134a refrigerant is:
A) Tan
B) Royal Blue
C) Light Blue
D) White
Q4) When should a saddle clamp access valve be installed?
Q5) When should an air conditioning system be evacuated?
Q6) Under what conditions should system oil be charged directly into the compressor?
Page 14
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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) Technicians working in the automotive repair industry are rarely exposed to hazards. A)True
B)False
Q2) When working around pulleys and revolving belts,what can happen if proper safety procedures are not followed?
Q3) Explain the safety precautions that should be taken when running an engine in a shop.
Q4) Automotive technicians who service mobile air conditioning systems must be certified by an EPA-approved testing agency.
A)True
B)False
Q5) Carbon monoxide may cause vomiting,headaches,and/or dizziness.
A)True
B)False
Q6) What action must be taken immediately when a chemical gets in the eyes.
Q7) List five examples of when proper eye protection should be worn.
Q8) Explain safety hazards that may result from wearing improper footgear in the shop.
Q9) What are the characteristics of carbon monoxide gas.
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Chapter 13: Extenssion 2: Typical Shop Procedures and Tools
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35 Verified Questions
35 Flashcards
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Sample Questions
Q1) A vacuum pump is used to remove refrigerant from the system.
A)True
B)False
Q2) What does the acronym VIN stands for?
Q3) <i>Technician A </i> says a vacuum pump is an essential piece of equipment for servicing a refrigerant system.<i>Technician B </i> says that you only need one manifold gauge set and it may be used for any type of refrigerant you need to service.Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B
Q4) What is your employer expected to supply first and foremost?
Q5) List three special service tools besides the manifold and gauge set that will expand your service and repair capabilities considerably.
Q6) MACS stands for Modern Automotive Control Systems.
A)True
B)False
Q7) What is a manifold and gauge set?
Page 16
Q8) What are the four basicemployee obligations?
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Page 17