Four-Stroke Engine Quiz

What is the most efficient design for an engine?

• Engines with valves installed directly above the piston

• Engines with valves installed directly below the piston

• Engines with valves installed on the side of the piston

• Engines with valves installed inside the piston

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Which type of engine is suitable for larger applications requiring more horsepower and torque?

• Single cylinder engines

• V-twin engines

• Vertical shaft engines

• Horizontal shaft engines

What are the three necessary conditions for an engine to operate?

• Sufficient air and fuel supply, ignition source, and compression

• Sufficient air supply, ignition source, and exhaust

• Sufficient fuel supply, ignition source, and compression

• Sufficient air and fuel supply, exhaust, and compression

How many full revolutions of the crankshaft are necessary to complete the four strokes in a four-stroke engine?

• One

• Two

• Three

• Four

What is the main role of the camshaft in an engine?

• To open and close the intake and exhaust valves

• To generate electricity for the spark plug

• To compress the air-fuel mixture

• To control the rotational speed of the engine

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What is the purpose of the flywheel in a four-stroke engine?

• To provide rotational energy and keep the engine turning

• To control the timing of the intake and exhaust valve events

• To open and close the intake and exhaust valves

• To generate electricity for the ignition source

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What happens during the intake stroke of a four-stroke engine?

• The piston moves up to compress the air-fuel mixture

• The exhaust valve opens to release spent gases

• The intake valve opens and air-fuel mixture enters the combustion chamber

• The spark plug ignites the air-fuel mixture

What occurs during the compression stroke of a four-stroke engine?

• The piston moves up to compress the air-fuel mixture

• The exhaust valve opens to release spent gases

• The intake valve opens and air-fuel mixture enters the combustion chamber

• The spark plug ignites the air-fuel mixture