Small Engines Chapter 3 & 4

Head gaskets are made from ____.

• Hard metals
• Soft metals
• Hard metals and Graphite layered together.
• Soft metals and graphite layered together.

Cast iron cylinder blocks are _______ than aluminum cylinder blocks.

• Heavier and more expensive
• lighter weight and cheaper
• more wear resistant
• both A and C

Diesel fuel is rated by ______ number.

• cetane
• octane
• flammability

_________ is the measurement of air pressure generated by the turbocharger that exceeds ambient air pressure.

• Turbo Lag
• Turbo Boost
• Turbine

Valve overlap is most useful in an engine at ______.

• Low speeds
• High Speeds

About _____ percent of the energy released in an internal combustion engine is converted into work.

• 20%
• 30%
• 50%
• 70%

The _____ ring is the piston ring located in the ring groove farthest from the piston head.

• wiper
• oil
• compression

A ______ raises the pressure and density of air entering the engine.

• Turbocharger
• Wastegate
• Carburetor
• Flux Capacitor

A nonferrous metal contains iron.

• True
• False

Valve overlap is typically between ________ degrees of crankshaft rotation.

• 1-2
• 5-10
• 10-20
• 20-30