Automobile- Basic Engine Parts Quiz!

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Automobile- Basic Engine Parts Quiz! - Quiz

Engines are the core reasons why most mechanical machines function; they change one form of energy into mechanical energy. As an engineering student, you should be well informed of the different parts of an engine, their importance, and how to ensure they are working properly. Take up the automobile test below and see how well you understand essential engine parts.


Questions and Answers
  • 1. 

    What does a spark plug do? 

    • A.

      Ignites the fuel and air mixture to create energy

    • B.

      Injects the fuel and air mixture into the combustion chamber

    • C.

      Supplys the engine with energy

    • D.

      Injects air into the intake valve

    Correct Answer
    A. Ignites the fuel and air mixture to create energy
    Explanation
    A spark plug is responsible for igniting the fuel and air mixture in the combustion chamber of an engine. When the spark plug generates an electric spark, it ignites the compressed fuel and air mixture, causing it to explode and create energy. This energy is then converted into mechanical motion, which powers the engine.

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  • 2. 

    What does the intake valve do? 

    • A.

      Releases excess fuel from the combustion chamber

    • B.

      Supplys the combustion chamber with air and fuel

    • C.

      Gets rid of the exhaust

    • D.

      Keeps the engine cool by supplying water

    Correct Answer
    B. Supplys the combustion chamber with air and fuel
    Explanation
    The intake valve supplies the combustion chamber with air and fuel. This is an essential function in the operation of an internal combustion engine, as it allows for the proper mixture of air and fuel to enter the combustion chamber for the combustion process. Without the intake valve, the engine would not be able to receive the necessary air and fuel mixture, resulting in a lack of power and inefficient operation.

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  • 3. 

    What does the exhaust valve do? 

    • A.

      Gets rid of the after products of the combustion process by releasing it into the air by means of a tailpipe

    • B.

      Takes extra fuel away from the combustion chamber

    • C.

      Gets water off the engine so it can work right

    • D.

      There's no such thing

    Correct Answer
    A. Gets rid of the after products of the combustion process by releasing it into the air by means of a tailpipe
    Explanation
    The exhaust valve is responsible for getting rid of the after products of the combustion process by releasing them into the air through a tailpipe. This helps to ensure that the engine operates efficiently and reduces harmful emissions.

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  • 4. 

    What's a piston? 

    • A.

      Cylindrical piece of metal that moves up and down useing the energy supplied by the combustion process

    • B.

      Metal wire that carrys an electric charge for the spark plug

    • C.

      Valve that tranfers fuel to the combustion chamber

    • D.

      Tube that supplys water to the engine's cooling system

    Correct Answer
    A. Cylindrical piece of metal that moves up and down useing the energy supplied by the combustion process
    Explanation
    A piston is a cylindrical piece of metal that moves up and down inside the cylinder of an engine. It is driven by the energy generated from the combustion process. As the fuel-air mixture ignites, it creates an explosion that pushes the piston downward. This motion is then transferred to the crankshaft, which converts it into rotational motion to power the engine. On the upward stroke, the piston compresses the fuel-air mixture before it is ignited again, completing the combustion cycle.

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  • 5. 

    What are the purpose of piston rings? 

    • A.

      Keeps a tight seal on the cylinders

    • B.

      Small pieces of metal that connects the parts of the crankshaft together

    • C.

      Keeps the oil from drying out

    • D.

      Keeps a tight seal on the piston heads so fuel and air dosn't leak into the sump

    Correct Answer
    D. Keeps a tight seal on the piston heads so fuel and air dosn't leak into the sump
    Explanation
    Piston rings serve the purpose of keeping a tight seal on the piston heads, preventing fuel and air from leaking into the sump. This is important for the efficient functioning of the engine, as any leakage can result in loss of power and decreased performance. By maintaining a tight seal, the piston rings ensure that the combustion process occurs properly within the cylinders, allowing the engine to generate power effectively.

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  • 6. 

    What's a connecting rod? 

    • A.

      Rod connecting the piston and crankshaft together

    • B.

      Piece of metal connecting the piston to the header

    • C.

      Piece of metal connecting the piston to the cylinder

    • D.

      Piece of metal connecting the fuel tank to the fuel cap

    Correct Answer
    A. Rod connecting the piston and crankshaft together
    Explanation
    A connecting rod is a piece of metal that connects the piston and crankshaft together in an engine. It plays a crucial role in converting the reciprocating motion of the piston into rotational motion of the crankshaft. As the piston moves up and down, the connecting rod transfers this motion to the crankshaft, which ultimately drives the rotation of the engine's shaft. This allows the engine to convert the linear motion of the piston into the rotational motion needed to power the vehicle or machine.

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  • 7. 

    What is the crankshaft? 

    • A.

      Supports the wheels of a car

    • B.

      Holds the headers together

    • C.

      Rod that turns the piston's up and down motion into circular motion

    • D.

      Just the name of screw that hold the engine together

    Correct Answer
    C. Rod that turns the piston's up and down motion into circular motion
    Explanation
    The crankshaft is a rod that turns the piston's up and down motion into circular motion. This is an essential component in an engine, as it converts the linear motion of the pistons into rotational motion, which drives the wheels of a car. It is not related to holding the headers together or being just a screw that holds the engine together.

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  • 8. 

    What's the sump? 

    • A.

      Section of the engine where access fuel and air go to be burned off

    • B.

      Where air is stored until needed

    • C.

      Name for the fuel tank cap

    • D.

      Section of oil under the piston that keeps the piston and crankshaft lubed

    Correct Answer
    D. Section of oil under the piston that keeps the piston and crankshaft lubed
    Explanation
    The sump refers to the section of oil under the piston that keeps the piston and crankshaft lubricated. This is important for the smooth operation of the engine as it reduces friction and prevents damage to the moving parts. The sump acts as a reservoir of oil that is constantly circulated to lubricate the engine components, ensuring their longevity and optimal performance.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 24, 2011
    Quiz Created by
    Areck43
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