APST CH30 MASTER SET

What is the compression ratio for small gas engines typically?

• six to one
• four to one
• five to one
• seven to one
• none of these

What component connects the piston to the crankshaft in a four-cycle engine?

• A connecting rod
• A valve
• A gear
• A cylinder
• none of these

What is a secondary circuit in an ignition system?

• A high-voltage circuit of an ignition system.
• A low-voltage circuit of an ignition system.
• A device that controls the speed of the engine.
• A rotating shaft with raised areas that open and close valves.
• none of these

What is a primary circuit in an ignition system?

• A low-voltage circuit of an ignition system.
• A high-voltage circuit of an ignition system.
• A rotating shaft with raised areas that open and close valves.
• A device that controls the speed of the engine.
• none of these

What does the crankcase of a two-cycle engine contain?

• A reed valve
• Oil
• A complex valve system
• Water
• none of these

What should you do before refueling an engine?

• Allow the engine to cool
• Keep the engine running
• Add water to the fuel
• Increase the engine speed
• none of these

What is an internal combustion engine?

• An engine that burns fuel inside a cylinder to create a force that drives a piston
• An engine that uses water to create steam
• An engine that operates without fuel
• An engine that uses solar power
• none of these

What should you never use gasoline for?

• As a solvent or to clean engine parts
• To start a campfire
• To power a lawnmower
• To fill a car's fuel tank
• none of these

Which component expels burned gasses from a cylinder?

• Exhaust stroke
• Flywheel
• Carburetor
• Piston rings
• none of these

During which stroke are exhaust fumes pushed out of the cylinder?

• Exhaust stroke
• Power stroke
• Compression stroke
• Intake stroke
• none of these