Automotive Systems, Quiz Yourself 2
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Unlike internal combustion engines, external combustion engines require a --
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Cylinder
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Piston
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Boiler
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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.
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- 2.
Engines transform heat energy to --
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Electricity
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Mechanical energy
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Kinetic energy
Correct Answer
A. Mechanical energyExplanation
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."Rate this question:
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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 --
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Heats the boiler
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Spins the flywheel
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Moves the piston downward
Correct Answer
A. Moves the piston downwardExplanation
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.Rate this question:
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- 4.
When volume inside the cylinder decreases, pressure --
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Increases
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Stays the same
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Decreases
Correct Answer
A. IncreasesExplanation
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.Rate this question:
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- 5.
As pressure increases inside the cylinder, temperature --
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Decreases
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Stays the same
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Increases
Correct Answer
A. IncreasesExplanation
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.Rate this question:
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- 6.
When the piston moves up and down, it is called --
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Repeating motion
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Resetting motion
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Reciprocating motion
Correct Answer
A. Reciprocating motionExplanation
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."Rate this question:
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- 7.
Reciprocating motion moves in ---
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Random directions
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A straight line
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Circles
Correct Answer
A. A straight lineExplanation
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."Rate this question:
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- 8.
To turn the wheels of a vehicle, reciprocating motion must be turned into ---
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Kinetic energy
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Torque
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Rotary motion
Correct Answer
A. Rotary motionExplanation
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.Rate this question:
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- 9.
Reciprocating motion is changed to rotary motion through use of a ---
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Cable
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Crankshaft and connecting rod
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Fuel line
Correct Answer
A. Crankshaft and connecting rodExplanation
Reciprocating motion refers to back-and-forth or linear motion, while rotary motion refers to circular motion. In order to convert reciprocating motion to rotary motion, a mechanism is needed to translate the linear motion into a circular one. The crankshaft and connecting rod system is commonly used for this purpose. The crankshaft converts the linear motion of the piston into rotational motion, while the connecting rod connects the piston to the crankshaft, allowing the transfer of motion. This mechanism is widely used in engines, where the reciprocating motion of the pistons is converted into rotary motion to drive the wheels or other mechanical components.Rate this question:
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- 10.
All gasoline and diesel combustion engines rely on three things. Those things are:
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Fuel, air and ignition
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Fuel, water and ignition
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Fuel, air and water
Correct Answer
A. Fuel, air and ignitionExplanation
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.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Sep 11, 2012Quiz Created by
Sandybridge
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