Four-Stroke Engine Quiz

What is a four-stroke engine?

• A four-stroke engine is a steam engine that uses four phases.
• A four-stroke engine operates on two strokes of the piston.
• A four-stroke engine is a type of electric motor.
• A four-stroke engine is an internal combustion engine that completes a power cycle in four strokes of the piston.

What are the four stages in a four stroke cycle?

• Intake, Compression, Release, Exhaust
• Intake, Compression, Power, Cooling
• Intake, Compression, Power, Exhaust
• Intake, Combustion, Power, Exhaust

During the first stroke, fuel and air enter into the cylinder through..............

What is the name of the stage when the valve is closed and the piston moves up again?

• Compression Stroke
• Exhaust Stroke
• Power Stroke
• Intake Stroke

What happens during the power stroke?

• The piston is pulled up by the exhaust gases.
• The piston is pushed down by heat or spark igniting the mixture , converting fuel energy into mechanical energy.

• The fuel is injected into the cylinder without ignition.
• The engine cools down to conserve energy.

What happens in exhaust stroke stage?

• The exhaust stroke expels combustion gases from the cylinder.
• The exhaust stroke ignites the fuel for combustion.
• The exhaust stroke compresses the fuel-air mixture.
• The exhaust stroke draws in fresh air into the cylinder.

Match the word with its definiton

• the process of compressing fuel and air

• ignite

• the process of releasing spent fuel

• exhaust valve

• to make something burn or catch fire

• exhaust stroke

• an opening where spent fuel is released

• pressure

• a force caused by pushing against someth

• compression stroke