| ASE A-7 Heating and Air Conditioning Certification Practice Test | |
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11. Technician A says a variable displacement compressor uses a wobble plate to change the piston stroke. Technician B says a longer piston stroke would reduce the refrigerant volume. Who is correct? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or |
16. Technician A says the orifice tube is located between the condenser and the evaporator. Technician B says this is considered a metering device as it changes refrigerant flow along with cooling demands. A. Technician A B. Technician B C. Both Technicians A and B D. Neither Technician A or B |
12. Technician A says an ambient temperature sensor senses the outside air temperature. Technician B says this sensor is a variable resister used by the automatic control system. A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or B |
17. A vehicle blows warm air only when sitting at stop lights. The least-likely cause of this would be: A. an overheating engine. B. weak electric fan motor. C. frozen expansion valve. D. debris in condenser fins. |
13. All of these are true about A/C receiver drier except it: A. is a liquid tank. B. is debris a filter. C. is located on the low side. D. absorbs moisture. |
18. The carpet is wet on the passengers side of a vehicle. Technician A says this may be caused a leaking heater core. Technician B says this could be caused by a clogged evaporator case drip tube. A. Technician A B. Technician B C. Both Technicians A and B D. Neither Technician A or B |
14. Technician A says the refrigerant always flows from the top of the A/C condenser to the bottom. Technician B says a restriction in an A/C condenser can cause damage to the compressor. Who is correct? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or B |
19. Technician A says an accumulator is a component incorporated into a (TX) expansion valve type system. Technician B says a receiver drier is a component incorporated into a cycling clutch type system. Who is correct? A. Technician A B. Technician B C. Both Technicians A and B D. Neither Technician A or B |
15. An A/C blower motor only operates in high speed. Technician A says there could be a short in the motors power feed. Technician B says it may have a faulty blower resister. Who is correct? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or B |
20. A TXV (thermal expansion valve) system blows cold air only for about five minutes before it goes warm. Technician A says this could be caused by a low system charge. Technician B says there could be moisture in the system. Who is correct? A. Technician A B. Technician B C. Both Technicians A and B D. Neither Technician A or B |