Rudolph's Heating And Air Conditioning! Trivia Quiz

20 Questions | Total Attempts: 1243

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Rudolph's review questions on air conditioning Chapter 50


Questions and Answers
  • 1. 
    Refrigerant is a low-pressure liquid as it leaves the condenser.
    • A. 

      True

    • B. 

      Fale

  • 2. 
    The heater core may be plugged if the inlet hose feels hot and the outlet hose feels cold.
    • A. 

      True

    • B. 

      False

  • 3. 
    The heater control valve is often called the water flow valve.
    • A. 

      True

    • B. 

      False

  • 4. 
    A liquid will boil at a lower temperature when it is under pressure.
    • A. 

      True

    • B. 

      False

  • 5. 
    R-134a is a hydrofluorocarbon.
    • A. 

      True

    • B. 

      False

  • 6. 
    R-12 and R-134a refrigerants can be mixed.
    • A. 

      True

    • B. 

      False

  • 7. 
    Mineral oil works well with R-12 refrigerant.
    • A. 

      True

    • B. 

      False

  • 8. 
    A thermostatic expansion valve is mounted on the outlet side of the evaporator.
    • A. 

      True

    • B. 

      False

  • 9. 
    Aluminum tubing is often used to connect air conditioning components where flexibility is not required.
    • A. 

      True

    • B. 

      False

  • 10. 
    Air conditioning systems that use an accumulator come equipped with a sight glass.
    • A. 

      True

    • B. 

      False

  • 11. 
    On which of the following laws of nature is the air conditioning system based?
    • A. 

      Heat flow

    • B. 

      Heat absorption

    • C. 

      Pressure and boiling points

    • D. 

      All of the above

  • 12. 
    Which of the following statements is correct?
    • A. 

      Refrigerant leaves the compressor as a high-pressure, high-temperature liquid

    • B. 

      Refrigerant leaves the condenser as a low-pressure, high-temperature liquid

    • C. 

      Refrigerant returns to the compressor as a low-pressure, high-temperature vapor

    • D. 

      None of the above

  • 13. 
    Which of the following statements is not correct?
    • A. 

      The condenser is normally mounted in front of the radiator

    • B. 

      The receiver/dryer is a storage tank for liquid refrigerant from the condenser

    • C. 

      The accumulator is located between the condenser and the receiver/dryer

    • D. 

      All of the above

  • 14. 
    Which of the following may be electrically connected in series with the compressor electromagnetic clutch?
    • A. 

      Ambient temperature switch

    • B. 

      Thermostatic switch

    • C. 

      Pressure cycling switch

    • D. 

      All of the above

  • 15. 
    Which of the following oils can be used in a R-134a system?
    • A. 

      PAG oil

    • B. 

      Natural oil

    • C. 

      Castor oil

    • D. 

      Mineral oil

  • 16. 
    A heating system includes all of the following parts except:
    • A. 

      Heater core

    • B. 

      Receiver/dryer

    • C. 

      Ventilation system

    • D. 

      Distribution plenum

  • 17. 
    Which of the following statements is not correct?
    • A. 

      The evaporator changes heated refrigerant to a liquid

    • B. 

      Automatic temperature controls maintain a set passenger compartment temperature

    • C. 

      Air conditioning/heater systems can be computer controlled

    • D. 

      Heaters and air conditioners use the same plenum chambers

  • 18. 
    Heater control valves are operated by a:
    • A. 

      Cable

    • B. 

      Thermostat

    • C. 

      Vacuum motor

    • D. 

      All of the above

  • 19. 
    Maximum air conditioning is not functioning properly. Technician A says the heater control valve could be faulty. Technician B says the recirculation door vacuum motor may be bad. Who is correct?
    • A. 

      A only

    • B. 

      B only

    • C. 

      Both A and B

    • D. 

      Neither A nor B

  • 20. 
    Technician A says refrigerant leaves the compressor as a high-pressure liquid. Technician B says the condenser changes the high-pressure liquid refrigerant into a high-pressure vapor. Who is correct?
    • A. 

      A only

    • B. 

      B only

    • C. 

      Both A and B

    • D. 

      Neither A nor B

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