ASE A7 HVAC Final
Flashcard
•
Life Skills
•
10th Grade - University
•
Practice Problem
•
Hard
Wayground Content
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20 questions
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1.
FLASHCARD QUESTION
Front
A vehicle's air conditioning performance is reduced at low speeds and stop lights, but cools at highway speeds. Which of these is MOST likely the cause of this condition? A low refriderant charge., A defective radiator cooling fan., A normal condition., A faulty compressore clutch relay.
Back
A defective radiator cooling fan.
2.
FLASHCARD QUESTION
Front
A frozen spot is noticed in the center of the condenser. Technician A says a frozen spot on a component or connection indicates a restriction in the system. Technician B says this is caused by too much freon. Who is correct?
Back
Technician A only
3.
FLASHCARD QUESTION
Front
A technician is diagnosing a vehicle's air conditioning system. The vehicle has good engine performance, but the air conditioner is blowing warm air only. A yellow substance is noticed around the evaporator case drip tube. Technician A says this is coolant leaking from the heater core. Technician B says this is fluorescent dye leaking from the evaporator core. Which technician is MOST likely correct?
Back
Technician B only
4.
FLASHCARD QUESTION
Front
Two technicians are discussing electric cooling fans and air conditioning performance. Technician A says electric fans regulate refrigerant temperatures more precisely than belt driven fans do. Technician B says electric cooling fans are controlled by control modules that use temperature and pressure actuated sensors and switches. Who is correct?
Back
Both Technician A and B
5.
FLASHCARD QUESTION
Front
Who is correct regarding the clutch relay: Technician A says the clutch relay protects the control head from the clutch circuit's high current. Technician B says open clutch relay windings result in compressor clutch engagement at all times?
Back
Technician A only
6.
FLASHCARD QUESTION
Front
All of these are true about an air conditioner's evaporator EXCEPT: It removes humidity from the air., Refrigerant flows from the bottom to the top., Refrigerant enters the evaporator as a liquid., The refrigerant changes from a vapor to a liquid as it receives heat from the cabin air.
Back
The refrigerant changes from a vapor to a liquid as it receives heat from the cabin air.
7.
FLASHCARD QUESTION
Front
A blower motor operates only in high speed. Technician A says there could be a short in the motor's power feed. Technician B says it may have a faulty blower motor resistor. Who is correct?
Back
Technician B only
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