4 Stroke Cycle Quiz

What is the primary purpose of the intake stroke in a 4-stroke engine?

• To expel exhaust gases

• To draw in the air-fuel mixture

• To compress the air-fuel mixture

• To ignite the air-fuel mixture

During the compression stroke, what happens to the air-fuel mixture?

• It is expelled from the cylinder

• It is ignited by the spark plug

• It is compressed to a smaller volume

• It is mixed with oil

Which component ignites the air-fuel mixture during the power stroke?

• The intake valve

• The exhaust valve

• The spark plug

• The piston

What is the main function of the exhaust stroke in a 4-stroke engine?

• To draw in the air-fuel mixture

• To compress the air-fuel mixture

• To expel exhaust gases

• To ignite the air-fuel mixture

In which stroke does the piston move downward due to the force of the ignited air-fuel mixture?

• Intake stroke

• Compression stroke

• Power stroke

• Exhaust stroke

During the intake stroke, which valve is open?

• Both intake and exhaust valves

• Only the intake valve

• Only the exhaust valve

• Neither valve

What happens to the piston during the compression stroke?

• It moves upward

• It moves downward

• It remains stationary

• It rotates

Which stroke directly follows the power stroke in a 4-stroke engine cycle?

• Intake stroke

• Compression stroke

• Exhaust stroke

• Another power stroke

What is the sequence of strokes in a 4-stroke engine?

• Intake, Compression, Power, Exhaust

• Compression, Intake, Power, Exhaust

• Power, Intake, Compression, Exhaust

• Exhaust, Power, Compression, Intake

During the exhaust stroke, which valve is open?

• Both intake and exhaust valves

• Only the intake valve

• Only the exhaust valve

• Neither valve