Unit 4 - Engines, Heating, and Cooling Test

What is the primary function of the engine block?

• To house the fuel system

• To provide structure for the engine components

• To store engine oil

• To control the exhaust system

What does the term "compression ratio" refer to in an engine?

• The ratio of the engine's size to its horsepower

• The volume of the cylinder when the piston is at the bottom compared to when it is at the top

• The amount of fuel consumed per mile

• The amount of fuel consumed per mile

Which part of the engine converts linear motion into rotational motion?

• Piston

• Camshaft

• Crankshaft

• Flywheel

What role does the camshaft play in an engine?

• Controls the intake and exhaust valves

• Supplies power to the electrical system

• Pumps coolant through the engine

• Regulates oil pressure

What is the purpose of the timing belt or chain?

• To increase engine temperature

• To synchronize the crankshaft and camshaft movements

• To filter engine oil

• To regulate fuel injection

In a four-stroke engine, which stroke follows the intake stroke?

• Power Stroke

• Crankshaft stroke

• Compression Stroke

• Exhaust Stroke

What is the primary function of the lubrication system in an engine?

• To provide cooling to the engine

• To reduce friction between moving parts

• To increase fuel efficiency

• To clean the engine

Which component of the lubrication system is responsible for filtering out contaminants from the oil?

• Oil cooler

• Oil pump

• Oil filter

• Oil pan

Which of the following could result from inadequate engine lubrication?

• Increased fuel economy

• Decreased engine temperature

• Engine overheating and damage

• Increased oil levels

How does the oil pump in an engine lubrication system function?

• It cools the oil

• It pumps air into the oil

• It circulates oil to engine components

• It converts oil to fuel