AUT108 Week 9 Quiz Emissions

Water can be considered a by-product of completely burned hydrogen fuel.

Select one:

• True

• False

Catalytic converters come in two types: ________ and ________.

Select one:

• Reduction; carbonized

• Oxidizing; reduction

• Carbonized; optimized

• Complex; simple

Oxygen makes up the largest percentage of air in Earth's atmosphere.

Select one:

• True

• False

If a vehicle passes a(n) ________ test with clean results, that is a good indication that all of the engine systems and the engine itself are operating well.

Select one:

• Combustion

• Emissions

• Repair

• Maintenance

Which of the following ensures that hydrocarbons are not released into the atmosphere when fuel in the fuel tank begins to vaporize and build pressure?

Select one:

• Catalytic converter

• EVAP system

• EGR system

• PCV system

Exhaust gas recirculation (EGR) systems began to appear on the automobile around _______ and became a mandatory part of emission controls.

Select one:

• 1962

• 1972

• 1982

• 1992

In older vehicles, crankcase vapors were vented directly to the atmosphere through a(n) ________ tube or road-draft tube. Modern vehicles now use a ___________ to recirculate the crankcase vapors back into the intake manifold.

Select one:

• Atmosphere: Air Filter

• Rebreather: Crankcase vent

• Breather: PCV Valve

• Vapor: PCV Valve

Replacement of gaskets in the crankcase to fix oil leaks due to pressure build-up will eventually cause _______.

Select one:

• The gasket to leak again

• Vacuum leaks

• The EVAP system leak detector to fail

• Drivability issues

If a PCV valve is sludged up or sticky, then the PCV valve must be ________.

Select one:

• Cleaned

• Replaced

• Repaired

• Reinstalled with new seals and gaskets

Physical damage to a catalytic converter can occur under all of the following conditions EXCEPT:

Select one:

• when a large rock strikes the converter.

• due to a thermal shock.

• when the hot convertor suddenly comes into contact with cold water in a deep pothole.

• when the catalyst is coated by silicone from improper sealants.