Combustion Engines Quiz

What are the two main types of combustion engines mentioned in the text?

• Electric and Spark ignition

• Spark ignition and Hybrid

• Spark ignition and Compression ignition

• Compression ignition and Jet

Which type of combustion engine is used on small machinery, pedestrian mowers, and scarifiers?

• Two-stroke spark ignition engine

• Four-stroke spark ignition engine

• Four-stroke compression ignition engine

• Two-stroke compression ignition engine

What is the main difference in the design of a two-stroke engine compared to a four-stroke engine?

• Two-stroke engines have valves, while four-stroke engines do not.

• Two-stroke engines do not require valves and use ports instead.

• Two-stroke engines complete the cycle in two revolutions of the crankshaft.

• Two-stroke engines are only used on hand held machinery.

During which stroke of the four-stroke engine cycle does the spark plug ignite the fuel/air mixture?

• Induction

• Compression

• Power

• Exhaust

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

• The piston descends and the inlet valve opens.

• The piston ascends and both valves are closed.

• The spark plug ignites the compressed mixture.

• The exhaust valve opens to allow the burnt gases to be expelled.

How does a two-stroke engine complete its cycle compared to a four-stroke engine?

• It completes the cycle in two revolutions of the crankshaft.

• It completes the cycle in one revolution of the crankshaft with separate intake and compression strokes.

• It completes the cycle in one revolution of the crankshaft with the intake and compression strokes occurring simultaneously.

• It completes the cycle in four revolutions of the crankshaft.

How can you distinguish a four-stroke engine from a two-stroke engine based on their oil system?

• A four-stroke engine has a separate tank for oil, while a two-stroke engine has an oil sump.

• A two-stroke engine has an oil sump, while a four-stroke engine uses mixed fuel.

• A four-stroke engine has an oil sump where you can check the oil level, while a two-stroke engine mixes oil in the fuel.

• Both engines have an oil sump, but only the two-stroke engine requires checking the oil level.

What converts the linear motion of pistons into rotary motion in an internal combustion engine?

• The clutch

• The drive shaft

• The crankshaft

• The drive transfer method

Which component is responsible for transferring rotary motion to the wheels or power take off shaft in a drive system?

• Drive shaft

• V belts

• Chains

• Tensioning systems

What is the purpose of tensioning systems in drive systems?

• To transfer rotary power to the wheels

• To operate cutting and driving systems

• To prevent components from being damaged and maintain efficiency

• To convert linear motion into rotary motion