RHS Vm Test V4

60 Questions | Total Attempts: 63

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RHS Vm Test V4

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Questions and Answers
  • 1. 
    Which of the following is not a cooling system function? 
    • A. 

       Remove excess heat from the engine

    • B. 

       Provide cooling for the passenger compartment

    • C. 

      Maintain constant engine operating temperature

    • D. 

      Help a cold engine quickly reach operating temperature

  • 2. 
     Which term best describes the type of engine-driven water pump used in a cooling system?
    • A. 

      Vane

    • B. 

       Rotor

    • C. 

      Centrifugal. 

    • D. 

       Positive displacement

  • 3. 
    Which part of the radiator is made up of tubes and cooling fins soldered or bonded together? 
    • A. 

      Core

    • B. 

      Tanks

    • C. 

      Petcock

    • D. 

       Filler neck

  • 4. 
    The purpose of the radiator cap is to 
    • A. 

      Provide a means of filling the radiator

    • B. 

      Pressurize the system to prevent boiling

    • C. 

      Decrease the boiling point in the cooling system

    • D. 

      Provide a means of checking the coolant reservoir level

  • 5. 
     What type of engine cooling fan is needed on front-wheel drive vehicles with transversemounted engines?
    • A. 

       Electric

    • B. 

      Rigid fan

    • C. 

      Flexible fan. 

    • D. 

      Fluid coupling

  • 6. 
    A hybrid’s internal combustion engine is kept warm when it is not running and the vehicle is in full electric mode by a(n) 
    • A. 

       electric fan

    • B. 

      Block heater

    • C. 

       engine blanket

    • D. 

      Coolant heat storage system

  • 7. 
    You should perform a combustion leak test when signs point to any of the following except a 
    • A. 

       blown head gasket. 

    • B. 

      Cracked heater core

    • C. 

      Cracked engine block

    • D. 

      Cracked cylinder head

  • 8. 
     Coolant that leaks into engine oil can collect and burn on cylinder walls, causing gumming or scoring on the 
    • A. 

      Oil pan

    • B. 

      Camshaft

    • C. 

      Connecting rod

    • D. 

      Piston and cylinder

  • 9. 
    How much pressure in pounds per square inch (psi) should you apply to the cooling system when using a radiator pressure tester? 
    • A. 

      System psi rating +/- 20%. 

    • B. 

      System psi rating +/- 10%. 

    • C. 

       Up to a maximum of 16.5 psi

    • D. 

      The same psi rating stamped on the radiator cap

  • 10. 
     An engine will run hotter than normal because of all of the following conditions except 
    • A. 

      Ice in the coolant

    • B. 

       a missing fan shroud

    • C. 

       a torque converter malfunction

    • D. 

       ignition timing that is retarded too far

  • 11. 
    If a vehicle is slow to warm up and has insufficient warmth from the heater, it may suffer from
    • A. 

      Engine overheating

    • B. 

      Engine overcooling

    • C. 

       a failed water pump

    • D. 

      Coolant and oil mixing

  • 12. 
    Air trapped in the cooling system could create undesirable areas of combustion heat buildup in the engine called 
    • A. 

      Hot spots

    • B. 

       nest spots. 

    • C. 

       freeze plugs. 

    • D. 

       purge zones. 

  • 13. 
    When measuring direct current (dc) voltage from coolant to ground during a coolant voltage test, good coolant is indicated by a reading 
    • A. 

      Less than 0.5 volts dc

    • B. 

       near battery voltage. 

    • C. 

      Of exactly 10.5 volts dc

    • D. 

       between 2 and 5 volts dc

  • 14. 
    The freezing point of coolant in a cooling system can be quickly measured with a(n) 
    • A. 

       voltmeter

    • B. 

      Hydrometer.

    • C. 

      Analyzer probe

    • D. 

       temperature gauge

  • 15. 
     Each of the following is an engine lubrication system function except 
    • A. 

      Prevents heat transfer

    • B. 

       cleans inside of engine

    • C. 

      Increases fuel economy

    • D. 

       reduces friction and wear

  • 16. 
    What engine oil additives are used to suspend contaminants? 
    • A. 

       Wear preventers and foam inhibitors

    • B. 

      Foam inhibitors and dispersants

    • C. 

      Wear preventers and detergents

    • D. 

       Detergents and dispersants

  • 17. 
     As prescribed by the Society of Automotive Engineers (SAE), which of the following oils would have the operating characteristics of the thinnest, lightest oil when cold? 
    • A. 

      SAE 20

    • B. 

      SAE 5W30. 

    • C. 

       SAE 15W40. 

    • D. 

      SAE 20W50. 

  • 18. 
    Pressure-fed oiling is not commonly used with the 
    • A. 

      Crankshaft bearings

    • B. 

      Camshaft bearings

    • C. 

      Timing chain

    • D. 

      Lifters

  • 19. 
    Which of the following is not considered one of the three basic engine oil pump types? 
    • A. 

       Gear

    • B. 

      Vane

    • C. 

      Piston

    • D. 

       Rotary

  • 20. 
     What type of oil pump is very dependable, but rare because they are costly to manufacture? 
    • A. 

       Belt-driven

    • B. 

      Gear-driven

    • C. 

      Variable volume

    • D. 

       Crankshaft-driven

  • 21. 
    A pressure relief valve is likely to be found in the 
    • A. 

      Oil pan

    • B. 

       oil pump

    • C. 

      Camshaft. 

    • D. 

      Oil gallery

  • 22. 
    Variable camshaft timing results in all of the following except 
    • A. 

      Better engine performance

    • B. 

      Improved fuel economy

    • C. 

      Lower oil consumption

    • D. 

      Lower emissions

  • 23. 
    Each of the following describes a lubrication system problem except 
    • A. 

      Defective gauge

    • B. 

      Low oil pressure

    • C. 

       high oil pressure

    • D. 

      Low oil consumption

  • 24. 
     What is the first thing you should do when troubleshooting a low oil pressure problem? 
    • A. 

       Check the oil level

    • B. 

       Replace the oil filter

    • C. 

      Test the oil pressure sending unit. 

    • D. 

      Warm up the engine to operating temperature

  • 25. 
     Each of these tips should be followed when changing engine oil and the oil filter except 
    • A. 

       keep the vehicle level

    • B. 

      Do not overtighten the pan drain plug

    • C. 

      Tighten the oil filter with a filter wrench

    • D. 

      Use the correct amount and viscosity of oil

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