ASE A7 Heating Air Conditioning Practice Test
41. Component A in the electrical diagram above has all of the following characteristics EXCEPT:
- A. It is a Negative Temperature Coefficient sensor.
- B. It is a thermistor.
- C. It is a variable resistor.
- D. It is a switch.
42. A frozen spot is noticed in the center of the condenser. Technician A says frost on a component or connection indicates a restriction at that point in the system. Technician B says this frost is caused by a clogged orifice tube. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
43. A vehicle's air conditioner only blows warm air, and a yellow substance is seen 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. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
44. R 134a Refrigerant:
- A. Changes from a vapor to a liquid as it absorbs heat.
- B. Containers are sky blue colored.
- C. Has a very high boiling point.
- D. Contains chlorine.
45. A vehicle's cooling system is losing coolant. A pressure test has been performed, and no leaks were found. Which of the following is MOST likely causing this condition?
- A. A leaking water pump.
- B. A faulty radiator pressure cap.
- C. A leaking heater core.
- D. A leaking radiator.