LV2.2 Engines Test

What is the primary function of the camshaft in an internal combustion engine?

• To control the opening and closing of the valves

• To ignite the air-fuel mixture

• To drive the alternator

• To pump fuel into the engine

Which component is responsible for mixing air and fuel in a carbureted engine?

• Fuel injector

• Carburetor

• Turbocharger

• Exhaust manifold

What is the purpose of the oil filter in an engine?

• To cool the engine

• To filter out impurities from the oil

• To increase fuel efficiency

• To reduce engine noise

Which of the following is a common symptom of a failing head gasket?

• High oil pressure

• Engine overheating

• Low battery voltage

• Faulty spark plugs

The process of a four-stroke engine cycle includes the following strokes:

• Intake, Compression, Power, Exhaust

• Intake, Power, Compression, Exhaust

• Compression, Intake, Power, Exhaust

• Power, Intake, Compression, Exhaust

The function of the crankshaft in an internal combustion engine is to:

• convert linear motion to rotational motion

• control the fuel injection

• regulate the engine temperature

• manage the exhaust system

The role of the timing belt or chain in an engine is to:

• supply fuel to the engine

• synchronize the rotation of the crankshaft and camshaft

• cool the engine

• lubricate engine parts

Explain the difference between a turbocharged and a naturally aspirated engine.

• A turbocharged engine uses a turbine to force more air into the combustion chamber, while a naturally aspirated engine relies on atmospheric pressure.

• A naturally aspirated engine uses a turbine to force more air into the combustion chamber, while a turbocharged engine relies on atmospheric pressure.

• Both engines use a turbine to force more air into the combustion chamber.

• Neither engine uses a turbine to force more air into the combustion chamber.

Common causes of engine knocking include:

• Incorrect fuel octane rating

• Worn out spark plugs

• Faulty oxygen sensor

• Clogged air filter

The cooling system in an engine works by:

• circulating coolant through the engine to absorb heat and dissipate it through the radiator

• using fans to blow air directly onto the engine to cool it down

• employing a chemical reaction to lower the engine's temperature

• utilizing ice packs placed around the engine