Automotive Systems, Quiz Yourself 4

11 Questions | Total Attempts: 1027

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Automotive Quizzes & Trivia

Four-stroke Cycle Engine.


Questions and Answers
  • 1. 
    For every two strokes made by the piston, the crankshaft ---
    • A. 

      Makes one complete revolution

    • B. 

      Makes a half-turn

    • C. 

      Remains stationery

  • 2. 
    The position of the piston at the instant its motion changes from down to up is known as ---
    • A. 

      Exact half-way point

    • B. 

      Top dead center

    • C. 

      Bottom dead center

  • 3. 
    Th position of the piston at the instant its motion changes from up to down is known as ---
    • A. 

      Bottom dead center

    • B. 

      Top dead center

    • C. 

      Exact half-way point

  • 4. 
    How many parts comprise the action of a four-stroke cycle engine?
    • A. 

      Four

    • B. 

      Three

    • C. 

      Two

  • 5. 
    During the intake stroke, the intake valve is ---
    • A. 

      Partially open

    • B. 

      Closed

    • C. 

      Open

  • 6. 
    When the piston moves downward inside the cylinder, it produces ---
    • A. 

      Large amounts of heat

    • B. 

      A partial vacuum

    • C. 

      Noise

  • 7. 
    At what point during the compression stroke does the intake valve close?
    • A. 

      When the crankshaft rotates

    • B. 

      When the piston reaches TDC

    • C. 

      When the piston reaches BDC

  • 8. 
    During the compression stroke in gasoline engines, the air-fuel mixture is compressed to about one-eighth of its originial volume.  This is called the --
    • A. 

      Compression ratio

    • B. 

      Compression equation

    • C. 

      Compression percentage

  • 9. 
    Ignition takes place as the piston reaches ---
    • A. 

      DOA

    • B. 

      BDC

    • C. 

      TDC

  • 10. 
    The burning fuel inside a cylinder causes pressure to rise to ---
    • A. 

      Between 600 - 700 pounds per square inch

    • B. 

      Between 600 - 700 tons per square inch

    • C. 

      Bweteen 600 - 700 pounds per centimeter

  • 11. 
    When does the exhaust valve open?
    • A. 

      When the exhaust fumes reach a certain point

    • B. 

      After the piston stops moving

    • C. 

      Just as the power stroke is finished

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