ASE T7 Practice Test Welcome to your ASE T7 Practice Test 1. ASE T7: HVAC Systems Diagnosis Service and Repair What component is responsible for regulating the flow of refrigerant in an automotive air conditioning system? A. Condenser B. Evaporator C. Expansion valve D. Compressor None 2. ASE T7: HVAC Systems Diagnosis Service and Repair In an automotive HVAC system, what does the evaporator coil primarily do? A. It cools the cabin air B. It heats the cabin air C. It pressurizes the refrigerant D. It circulates engine coolant None 3. ASE T7: HVAC Systems Diagnosis Service and Repair What is the purpose of the receiver-drier or accumulator in an automotive air conditioning system? A. To control the blower fan speed B. To remove moisture and debris from the refrigerant C. To regulate the engine's idle speed D. To compress the refrigerant None 4. ASE T7: HVAC Systems Diagnosis Service and Repair Which of the following refrigerants is known for its environmental impact and is being phased out in many automotive HVAC systems? A. R-12 (Freon) B. R-22 C. R-134a D. R-410A None 5. ASE T7: HVAC Systems Diagnosis Service and Repair In an automotive HVAC system, which component is responsible for heating the cabin air during cold weather? A. Evaporator B. Compressor C. Heater core D. Condenser None 6. ASE T7: HVAC Systems Diagnosis Service and Repair What is the purpose of the HVAC blower motor resistor? A. To regulate the engine's idle speed B. To control the temperature of the refrigerant C. To control the blower fan speed D. To circulate engine coolant None 7. ASE T7: A/C System and Component Diagnosis Service and Repair What can be the consequence of overcharging the refrigerant in an automotive A/C system? A. Reduced cooling capacity B. Improved fuel efficiency C. Faster blower fan speed D. Enhanced cabin air filtration None 8. ASE T7: A/C System and Component Diagnosis Service and Repair In an A/C system, what component is responsible for releasing heat absorbed by the refrigerant during the cooling process? A. Evaporator B. Receiver-drier C. Condenser D. Expansion valve None 9. ASE T7: A/C System and Component Diagnosis Service and Repair What is the primary function of the A/C compressor in an automotive air conditioning system? A. To control the blower fan speed B. To remove moisture from the cabin air C. To compress and circulate the refrigerant D. To regulate the engine's idle speed None 10. ASE T7: A/C System and Component Diagnosis Service and Repair Which refrigerant is commonly used in modern automotive air conditioning systems and has largely replaced R-12 (Freon) due to environmental concerns? A. R-22 B. R-1234yf C. R-134a D. R-410A None 11. ASE T7: A/C System and Component Diagnosis Service and Repair What component is responsible for removing moisture from the refrigerant in an automotive A/C system? A. Condenser B. Receiver-drier C. Evaporator D. A/C compressor None 12. ASE T7: A/C System and Component Diagnosis Service and Repair What is the likely cause of an A/C system that blows warm air when the vehicle is idling but cools properly at higher engine speeds? A. Faulty A/C compressor B. Low refrigerant charge C. Malfunctioning expansion valve D. Clogged cabin air filter None 13. ASE T7: A/C System and Component Diagnosis Service and Repair In an automotive A/C system, what is the purpose of the expansion valve? A. To regulate the engine's idle speed B. To control the temperature of the refrigerant C. To direct airflow within the cabin D. To regulate the flow of refrigerant and reduce its pressure None 14. ASE T7: A/C System and Component Diagnosis Service and Repair What is the function of the HVAC mode door in a vehicle's climate control system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To direct airflow to different vents or modes (e.g., defrost, floor, dash) D. To compress the refrigerant None 15. ASE T7: A/C System and Component Diagnosis Service and Repair What component is responsible for controlling the blower fan speed in an automotive A/C system? A. A/C compressor B. Heater core C. Blower motor resistor D. Evaporator None 16. ASE T7: A/C System and Component Diagnosis Service and Repair What is the purpose of the A/C system's high-pressure relief valve? A. To regulate the engine's idle speed B. To control the blower fan speed C. To protect the system from over-pressurization D. To direct airflow within the cabin None 17. ASE T7: A/C System and Component Diagnosis Service and Repair What is the purpose of the A/C system's compressor clutch? A. To control the blower fan speed B. To remove moisture from the cabin air C. To compress and circulate the refrigerant D. To regulate the engine's idle speed None 18. ASE T7: A/C System and Component Diagnosis Service and Repair What is the function of the HVAC recirculation mode in a vehicle's climate control system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To recirculate cabin air, improving cooling efficiency D. To compress the refrigerant None 19. ASE T7: A/C System and Component Diagnosis Service and Repair In an automotive A/C system, what does the evaporator coil primarily do? A. It cools the cabin air B. It heats the cabin air C. It pressurizes the refrigerant D. It removes moisture from the cabin air None 20. ASE T7: A/C System and Component Diagnosis Service and Repair What is the primary purpose of the A/C system's condenser fan? A. To regulate the engine's idle speed B. To control the blower fan speed C. To assist in cooling the A/C refrigerant in the condenser D. To direct airflow within the cabin None 21. ASE T7: A/C System and Component Diagnosis Service and Repair What is the primary function of the A/C system's accumulator or receiver-drier? A. To regulate the engine's idle speed B. To control the blower fan speed C. To remove moisture from the refrigerant D. To direct airflow within the cabin None 22. ASE T7: A/C System and Component Diagnosis Service and Repair In an A/C system, what component is responsible for directing refrigerant flow between the evaporator and condenser? A. Receiver-drier B. Expansion valve C. A/C compressor D. Blower motor resistor None 23. ASE T7: A/C System and Component Diagnosis Service and Repair In an A/C system, what component is responsible for removing heat from the cabin air during the cooling process? A. Evaporator B. Receiver-drier C. Compressor clutch D. Expansion valve None 24. ASE T7: A/C System and Component Diagnosis Service and Repair What could be the cause of an A/C system that produces an unpleasant odor when the air conditioning is turned on? A. A faulty blower motor resistor B. Clogged cabin air filter C. A malfunctioning compressor clutch D. Low refrigerant charge None 25. ASE T7: A/C System and Component Diagnosis Service and Repair What component is responsible for converting high-pressure vapor refrigerant into a high-pressure liquid in an A/C system? A. Condenser B. Evaporator C. Receiver-drier D. Expansion valve None 26. ASE T7: A/C System and Component Diagnosis Service and Repair What is the potential consequence of a refrigerant leak in an automotive A/C system? A. Improved cooling performance B. Reduced fuel efficiency C. Quieter blower fan operation D. Extended A/C system lifespan None 27. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What component is responsible for removing excess heat from the engine coolant in an automotive cooling system? A. Heater core B. Radiator C. A/C compressor D. Expansion valve None 28. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What is the primary function of the thermostat in an engine's cooling system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To direct airflow within the cabin D. To control the engine's operating temperature None 29. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What can cause a vehicle's engine to overheat, leading to potential damage? A. A malfunctioning blower motor resistor B. A clogged cabin air filter C. A failed thermostat or water pump D. Low refrigerant charge None 30. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair Which type of coolant is typically recommended for use in modern automotive cooling systems? A. Distilled water B. Mineral oil C. Antifreeze or coolant mixture D. Brake fluid None 31. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What is the purpose of the engine cooling fan in an automotive cooling system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To assist in cooling the radiator and engine coolant D. To direct airflow within the cabin None 32. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What can cause a vehicle's heater to blow cold air even when the engine is warmed up? A. A malfunctioning blower motor resistor B. A clogged cabin air filter C. A stuck open thermostat D. Overcharged refrigerant None 33. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What component is responsible for removing excess heat from the engine coolant in an automotive cooling system? A. Heater core B. Radiator C. A/C compressor D. Expansion valve None 34. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What can cause a vehicle's engine to overheat, leading to potential damage? A. A malfunctioning blower motor resistor B. A clogged cabin air filter C. A failed thermostat or water pump D. Low refrigerant charge None 35. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What is the purpose of the engine cooling fan in an automotive cooling system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To assist in cooling the radiator and engine coolant D. To direct airflow within the cabin None 36. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What component is responsible for circulating engine coolant through the heater core in a vehicle's HVAC system? A. A/C compressor B. Radiator C. Water pump D. Thermostat None 37. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What can cause a vehicle's heater to blow cold air even when the engine is warmed up? A. A malfunctioning blower motor resistor B. A clogged cabin air filter C. A stuck open thermostat D. Overcharged refrigerant None 38. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What is the likely cause of an engine coolant leak in an automotive cooling system? A. Faulty blower motor resistor B. Clogged cabin air filter C. A damaged radiator or hose D. Low refrigerant charge None 39. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair Which type of coolant is typically recommended for use in modern automotive cooling systems? A. Distilled water B. Mineral oil C. Antifreeze or coolant mixture D. Brake fluid None 40. ASE T7: Heating and Engine Cooling Systems Diagnosis Service and Repair What is the primary function of the thermostat in an engine's cooling system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To direct airflow within the cabin D. To control the engine's operating temperature None 1 out of 40 Time is Up! Time's up
