Four-Stroke Engine Quiz

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Test your understanding of the four-stroke cycle

Created by

Maria Ellen Mae Alvior

Philippines

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Froggy Jumps Four-Stroke Engine QuizOnline version Test your understanding of the four-stroke cycle by Maria Ellen Mae Alvior 1 Which stroke starts with the intake valve open and the piston moving down? a Compression stroke b Intake stroke c Exhaust stroke 2 During which stroke is the air-fuel mixture compressed by the piston? a Intake stroke b Exhaust stroke c Compression stroke 3 What happens in the power stroke? a Intake of air-fuel mixture b Piston rises with no ignition c Ignition of the compressed mixture and piston is pushed down 4 Which stroke expels burnt gases from the cylinder? a Intake stroke b Exhaust stroke c Compression stroke 5 Which event closes the intake valve at the end of the intake stroke? a TDC (Top Dead Center) after intake b BDC (Bottom Dead Center) c Ignition timing event 6 What is the main purpose of the intake stroke? a Expel exhaust gases b Fill the cylinder with a fresh air-fuel mixture c Compress the mixture 7 Which component restricts the exhaust during the exhaust stroke? a Piston rings b Exhaust valve c Intake valve 8 At what point does the spark plug typically ignite in a gasoline engine? a During exhaust stroke b At the start of intake stroke c Near the end of the compression stroke 9 Which stroke ensures the piston returns to bottom to prepare for the next cycle? a Both intake and compression strokes collectively end at BDC b Power stroke only c Exhaust stroke only 10 What cycle provides the piston’s force to drive the crankshaft after ignition? a Exhaust stroke b Intake stroke c Power (combustion) stroke

Froggy Jumps

Four-Stroke Engine QuizOnline version

Test your understanding of the four-stroke cycle

by Maria Ellen Mae Alvior

Which stroke starts with the intake valve open and the piston moving down?

Compression stroke

Intake stroke

Exhaust stroke

During which stroke is the air-fuel mixture compressed by the piston?

Intake stroke

Exhaust stroke

Compression stroke

What happens in the power stroke?

Intake of air-fuel mixture

Piston rises with no ignition

Ignition of the compressed mixture and piston is pushed down

Which stroke expels burnt gases from the cylinder?

Intake stroke

Exhaust stroke

Compression stroke

Which event closes the intake valve at the end of the intake stroke?

TDC (Top Dead Center) after intake

BDC (Bottom Dead Center)

Ignition timing event

What is the main purpose of the intake stroke?

Expel exhaust gases

Fill the cylinder with a fresh air-fuel mixture

Compress the mixture

Which component restricts the exhaust during the exhaust stroke?

Piston rings

Exhaust valve

Intake valve

At what point does the spark plug typically ignite in a gasoline engine?

During exhaust stroke

At the start of intake stroke

Near the end of the compression stroke

Which stroke ensures the piston returns to bottom to prepare for the next cycle?

Both intake and compression strokes collectively end at BDC

Power stroke only

Exhaust stroke only

What cycle provides the piston’s force to drive the crankshaft after ignition?

Exhaust stroke

Intake stroke

Power (combustion) stroke

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Four-Stroke Engine Quiz

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Four-Stroke Engine QuizOnline version

by Maria Ellen Mae Alvior

Which stroke starts with the intake valve open and the piston moving down?

During which stroke is the air-fuel mixture compressed by the piston?

What happens in the power stroke?

Which stroke expels burnt gases from the cylinder?

Which event closes the intake valve at the end of the intake stroke?

What is the main purpose of the intake stroke?

Which component restricts the exhaust during the exhaust stroke?

At what point does the spark plug typically ignite in a gasoline engine?

Which stroke ensures the piston returns to bottom to prepare for the next cycle?

What cycle provides the piston’s force to drive the crankshaft after ignition?

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