Rudolph's Engine Heating And Cooling! Trivia Quiz

20 Questions | Total Attempts: 388

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Rudolphs review questions on heating and cooling Chap. 12


Questions and Answers
  • 1. 
    100 percent antifreeze will freeze at a lower temperature than 50/50 mixture of antifreeze and water.
    • A. 

      True

    • B. 

      False

  • 2. 
    The cooling system is designed to cool 100% of the heat produced by the engine.
    • A. 

      True

    • B. 

      False

  • 3. 
    Heat will always flow from a hot to a cooler substance
    • A. 

      True

    • B. 

      False

  • 4. 
    As the pressure of a liquid increases, the boiling point decreases
    • A. 

      True

    • B. 

      False

  • 5. 
    When the thermoststat is open, it directs coolant flow through the radiator
    • A. 

      True

    • B. 

      False

  • 6. 
    Air that is trapped in a cooling system will not affect the cooling capability
    • A. 

      True

    • B. 

      False

  • 7. 
    In most automotive applications, the water pump is driven by the:
    • A. 

      Flywheel

    • B. 

      Camshaft

    • C. 

      Crankshaft

    • D. 

      Impeller

  • 8. 
    Which of the following cooling system hoses is normally subjected to the roughest service life?
    • A. 

      Upper radiator

    • B. 

      Lower radiator

    • C. 

      Heater inlet

    • D. 

      Bypass

  • 9. 
    For every one pound of pressure put on engine coolant, the boiling point of the coolant is raised about___F degrees
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

  • 10. 
    When must a thermostat be fully opened?
    • A. 

      20 F degrees above the start to open temperature

    • B. 

      3 F degrees above or below its temperature rating

    • C. 

      3 F degrees above its temperature rating

    • D. 

      20 F degrees below the start to open temperature

  • 11. 
    The typically recommended mixture of water and antifreeze is:
    • A. 

      30/70

    • B. 

      50/50

    • C. 

      40/60

    • D. 

      60/40

  • 12. 
    Most manufacturers recommend that cooling systems should be drained, flushed, and filled every:
    • A. 

      Six months

    • B. 

      Year

    • C. 

      Two years

    • D. 

      Five years

  • 13. 
    Technician A says an electric cooling fan may come on without the ignition being turned on. Technician B says an electric cooling fan may be controlled by the engine control computer. Who is correct?
    • A. 

      A only

    • B. 

      B only

    • C. 

      Both A and B

    • D. 

      Neither A nor B

  • 14. 
    Cooling system pressure is increased by the use of a
    • A. 

      Water pump

    • B. 

      Electric fan

    • C. 

      Radiator cap

    • D. 

      Thermostat

  • 15. 
    A thermostat is used in the cooling system to prevent
    • A. 

      Overheating

    • B. 

      Overcooling

    • C. 

      Both A & B are correct

    • D. 

      Neither A or B are correct

  • 16. 
    Radiator design ( coolant flow ) is
    • A. 

      Cross flow

    • B. 

      Down flow

    • C. 

      Both A and B

    • D. 

      Neither A or B

  • 17. 
    Heat that is hidden is called
    • A. 

      Absolute heat

    • B. 

      Warm heat

    • C. 

      Specific heat

    • D. 

      Latent heat

  • 18. 
    Cooling systems are pressurized in normal operating conditions to
    • A. 

      Increase boiling point of coolant

    • B. 

      Ensure a constant flow of coolant

    • C. 

      Aid in locating leaks

    • D. 

      Minimize the formation of rust and corrosion

  • 19. 
    In a typical thermostat, operation is controlled by
    • A. 

      A temperature sensitive bi-metal spring

    • B. 

      A pressure sensitive control switch

    • C. 

      A wax pellet and coil spring

    • D. 

      Coolant flow rate through the water outlet connection

  • 20. 
    Technician A and B are discussing fan shrouds. Technician A says that engine can be run without the shrouds. Technician B says that the shrouds should not be removed. Which technician is correct?
    • A. 

      Technician A

    • B. 

      Technician B

    • C. 

      Both A & B

    • D. 

      Neither A or B

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