Automotive Systems, Quiz Yourself 2

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| By Sandybridge
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Sandybridge
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Quizzes Created: 4 | Total Attempts: 4,747
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  • 1/10 Questions

    Reciprocating motion is changed to rotary motion through use of a ---

    • Cable
    • Crankshaft and connecting rod
    • Fuel line
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About This Quiz

Automotive Systems, Quiz Yourself 2 tests knowledge on engine mechanics, focusing on the transformation of heat to mechanical energy, and the dynamics of internal combustion engines. It's ideal for learners interested in automotive and mechanical engineering.

Automotive Systems, Quiz Yourself 2 - Quiz

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  • 2. 

    All gasoline and diesel combustion engines rely on three things. Those things are:

    • Fuel, air and ignition

    • Fuel, water and ignition

    • Fuel, air and water

    Correct Answer
    A. Fuel, air and ignition
    Explanation
    Gasoline and diesel combustion engines require fuel, air, and ignition to operate. Fuel is necessary to provide the energy source for the engine, while air is needed for the combustion process. Ignition is essential to ignite the fuel-air mixture and initiate the combustion reaction. Without any of these three components, the engine would not be able to function properly and generate power.

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  • 3. 

    In an internal combustion engine, burning fuel within an enclosed cylinder results in the expansion of gases. This expansion creates pressure that --

    • Heats the boiler

    • Spins the flywheel

    • Moves the piston downward

    Correct Answer
    A. Moves the piston downward
    Explanation
    When fuel is burned within an enclosed cylinder in an internal combustion engine, the expansion of gases creates pressure. This pressure pushes against the piston, causing it to move downward. As the piston moves, it transfers this motion to the crankshaft, which ultimately powers the vehicle or machine. Therefore, the correct answer is that the expansion of gases moves the piston downward.

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  • 4. 

    Engines transform heat energy to --

    • Electricity

    • Mechanical energy

    • Kinetic energy

    Correct Answer
    A. Mechanical energy
    Explanation
    Engines are devices that convert heat energy into mechanical energy. They achieve this through a series of processes such as combustion, expansion, and rotation of mechanical components. The mechanical energy produced by engines can be used to power various types of machinery, vehicles, or equipment. Therefore, the correct answer is "mechanical energy."

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  • 5. 

    As pressure increases inside the cylinder, temperature --

    • Decreases

    • Stays the same

    • Increases

    Correct Answer
    A. Increases
    Explanation
    As pressure increases inside the cylinder, the molecules are forced closer together, resulting in an increase in the average kinetic energy of the molecules. This increase in kinetic energy translates to an increase in temperature. Therefore, as pressure increases, the temperature also increases.

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  • 6. 

    When the piston moves up and down, it is called --

    • Repeating motion

    • Resetting motion

    • Reciprocating motion

    Correct Answer
    A. Reciprocating motion
    Explanation
    The term "reciprocating" refers to a back-and-forth or to-and-fro motion. In the context of a piston, when it moves up and down within a cylinder, it exhibits a reciprocating motion. This motion is characterized by the piston alternating between two extreme positions, creating a repetitive or oscillating movement. Therefore, the correct answer is "reciprocating motion."

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  • 7. 

    Unlike internal combustion engines, external combustion engines require a --

    • Cylinder

    • Piston

    • Boiler

    Correct Answer
    A. Boiler
    Explanation
    External combustion engines, such as steam engines, work by burning fuel outside of the engine to produce heat. This heat is then transferred to a working fluid, usually water, which is converted into steam. The steam is then used to drive a turbine or a piston, which generates mechanical energy. In this process, a boiler is necessary to heat the working fluid and convert it into steam. Therefore, the correct answer is "boiler".

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  • 8. 

    When volume inside the cylinder decreases, pressure --

    • Increases

    • Stays the same

    • Decreases

    Correct Answer
    A. Increases
    Explanation
    When the volume inside a cylinder decreases, the same amount of gas is compressed into a smaller space. This compression leads to an increase in the number of gas molecules colliding with the walls of the cylinder per unit time, resulting in an increase in pressure. Therefore, when the volume decreases, the pressure increases.

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  • 9. 

    To turn the wheels of a vehicle, reciprocating motion must be turned into ---

    • Kinetic energy

    • Torque

    • Rotary motion

    Correct Answer
    A. Rotary motion
    Explanation
    Reciprocating motion refers to a back-and-forth or up-and-down movement, which is not suitable for turning the wheels of a vehicle. In order to turn the wheels, reciprocating motion needs to be converted into rotary motion, which is a circular movement around an axis. This allows the wheels to rotate and propel the vehicle forward. Therefore, the correct answer is rotary motion.

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  • 10. 

    Reciprocating motion moves in ---

    • Random directions

    • A straight line

    • Circles

    Correct Answer
    A. A straight line
    Explanation
    Reciprocating motion is a back and forth movement along a straight line. Unlike circular motion, which follows a circular path, reciprocating motion involves oscillation in one direction and then back in the opposite direction, repeating the pattern. This type of motion can be observed in various mechanical systems, such as pistons in engines or the up and down motion of a seesaw. Therefore, the correct answer is "a straight line."

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 11, 2012
    Quiz Created by
    Sandybridge
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