Small Engines and Their Operations Quiz

What is the first stroke of a four-stroke engine called?

• Compression

• Intake

• Power

• Exhaust

During which stroke of a four-stroke engine is fuel injected into the combustion chamber in a diesel engine?

• Intake

• Compression

• Power

• Exhaust

What is a unique feature of the two-stroke engine's operation compared to the four-stroke engine?

• It completes a power cycle in two strokes.

• It uses valves for air intake.

• It has a separate oil reservoir.

• It requires a carburetor to mix air and fuel.

Which of the following engine parts is typically not found in a two-stroke engine?

• Spark plug

• Piston

• Camshaft

• Crankshaft

In a four-stroke engine, what happens during the compression stroke?

• The air-fuel mixture is ignited.

• The exhaust gases are expelled.

• The air-fuel mixture is drawn into the combustion chamber.

• The air-fuel mixture is compressed.

How does the exhaust system in a two-stroke engine differ from that of a four-stroke engine?

• It uses a simpler design without a catalytic converter.

• It directly expels exhaust gases without going through an exhaust stroke.

• It recycles exhaust gases back into the combustion chamber.

• It has multiple exhaust ports for better efficiency.

What is the purpose of the spark plug in a small engine?

• To compress the air-fuel mixture

• To ignite the air-fuel mixture

• To intake air into the combustion chamber

• To expel exhaust gases

Which component is responsible for converting the linear motion of the piston into rotational motion in both two-stroke and four-stroke engines?

• Camshaft

• Crankshaft

• Connecting rod

• Cylinder head

In a two-stroke engine, how are the intake and exhaust processes accomplished?

• Through separate intake and exhaust valves

• Through the movement of the piston uncovering ports in the cylinder wall

• Through a turbocharger

• Through a dedicated pump

What is the main advantage of a four-stroke engine over a two-stroke engine?

• Higher power output

• Simpler construction

• More efficient fuel consumption

• Less maintenance required