FOUR-STROKE ENGINE:OVERVIEW ASSESSMENT 1

A four-stroke engine converts which of the following?

• Reciprocating energy to mechanical energy

• Mechanical energy to chemical energy

• Thermal energy to mechanical energy

• Chemical energy to mechanical energy

During the intake stroke, what are the positions of the valves?

• Intake valve is closed and the exhaust valve is open

• Intake valve is open and the exhaust valve is closed

• Both valves are open

• Both valves are closed

What is used to ignite the air/fuel mixture inside the cylinder?

• Internal cylinder pressure only

• A glow plug

• A spark plug

• Spontaneous combustion

Which of the following is NOT one of the four strokes?

• Intake stroke

• Thermal stroke

• Power stroke

• Exhaust stoke

Which of the following correctly defines a stroke?

• The up-down movements of the piston

• The rotating movement of the crankshaft

• The opening and closing of the valves

• The side to side movement of the camshaft