How a car engine works

How many strokes are involved in a car engine's four-stroke cycle?

• Two
• Three
• Four
• Five

What happens during the compression stroke of a car engine?

• Air-fuel mixture is sucked into the cylinder
• Electrical spark ignites the fuel and air mixture
• Piston descends, pushing the spent mixture out
• Piston comes back up, compressing the fuel and air mixture

What is the purpose of the camshafts in a car engine?

• To open and close the exhaust valves
• To push the pistons up and down
• To open and close the intake valves
• To connect the pistons to the crankshaft

How is power transferred from the piston to the crankshaft in a car engine?

• Through the camshafts
• Through the spark plug
• Through the connecting rod
• Through the timing belt

What does RPM stand for in relation to a car engine?

• Revolutions Per Mile
• Rounds Per Minute
• Rotations Per Minute
• Revolutions Per Minute

What is the purpose of the radiator in a car engine?

• To cool the engine parts
• To filter the air intake
• To ignite the fuel-air mixture
• To capture toxic chemicals in exhaust

What does the alternator do in a car engine?

• Delivers electrical current to the spark plugs
• Converts mechanical energy into electricity
• Regulates coolant temperature
• Circulates oil through the engine

What is the purpose of motor oil in a car engine?

• To clean the engine parts
• To lubricate the moving parts
• To cool the engine
• To filter contaminants in the exhaust

What is the function of the oil filter in a car engine?

• To cool the engine
• To capture toxic chemicals in exhaust
• To filter contaminants from the oil
• To deliver electrical spark for combustion

What is the purpose of the exhaust manifold in a car engine?

• To cool the engine parts
• To filter the air intake
• To collect gases from multiple cylinders
• To ignite the fuel-air mixture