Quiz on Internal Combustion Engines

What is the primary function of an internal combustion engine?

• To store energy for later use

• To convert mechanical energy into heat energy

• To cool down the vehicle

• To turn heat energy into mechanical energy

What type of engine is most commonly used in automobiles?

• Rotary engine

• Electric engine

• Reciprocating engine

• Steam engine

What is the role of the piston in an internal combustion engine?

• To store fuel

• To cool the engine

• To compress the air-fuel mixture

• To ignite the fuel

Which type of fuel is primarily used in spark-ignition engines?

• Kerosene

• Gasoline

• Biodiesel

• Ethanol

What happens to the air-fuel mixture in a spark-ignition engine before ignition?

• It is compressed

• It is cooled

• It is vaporized

• It is filtered

What is the temperature that the air reaches in a compression ignition engine?

• 1200F

• 500F

• 800F

• 1000F

How is the fuel ignited in a compression ignition engine?

• By a spark plug

• By electrical current

• By heated air

• By a flame

What type of fuel do compression ignition engines typically use?

• Gasoline

• Light fuel oil

• Natural gas

• Propane

What is the main difference between spark-ignition and compression-ignition engines?

• The size of the engine

• The type of fuel used

• The weight of the engine

• The color of the engine

What is the purpose of the crankshaft in an internal combustion engine?

• To convert linear motion into rotational motion

• To store fuel

• To cool the engine

• To ignite the fuel