1–11.
If the exhaust valve opened in the
middle of the intake stroke, the
piston would draw burnt gases into
the combustion chamber with a fresh
mixture of fuel and air.
1.
True
2.
False
1-12.
What part of the camshaft contacts
the bottom of the lifter?
1.
Cam bearing
2.
Cam valve tappet
3.
Cam timing gear
4.
Cam lobe
Learning Objective:
Recognize
the principles and components
of fuel systems.
1-13.
The function of the fuel system is
to ensure a quantity of clean fuel
is confined from the fuel intake
of an engine?
1.
True
2.
False
1–14.
What type of harmful pollution is
emitted in great amounts into the
atmosphere by engines that use
leaded gasoline?
1.
Hydrocarbons
2.
Sodium Aluminate
3.
Hydrogen sulfide
4.
Carbon dioxide
1-15.
What number designator is used to
identify the ability of gasoline to
burn evenly and resist spontaneous
combustion?
1.
Cetane
2.
Ratio
3.
Octane
4.
Fathom
1-16.
As engine exhaust passes through
the catalytic converter, what
chemical compounds are produced by
the oxidation of carbon monoxide
and hydrocarbons?
1.
Nitrates and ketones
2.
Hydrogen sulfide and carbon
monoxide
3.
Carbon dioxide and water
4.
Sulfur dioxide and acetones
1-17.
Catalytic converters are designed
to convert the exhaust gases formed
from the combustion of leaded
gasoline.
1.
True
2.
False
1-18.
Diesel fuels can retain dirt
particles in suspension longer
than gasoline because it is heavier
and more viscous.
1.
True
2.
False
1-19.
What supervisor approves the use
of Jet-A1 and JP–5 as fuel?
1.
Maintenance
2.
Transportation
3.
Project
4.
Light shop
1–20.
To prevent injector pumps and
injector from seizing when jet fuel
is used in diesel engines, what
ingredient is added to the jet fuel
to improve the lubricating
qualities?
1.
Hydraulic fluid
2.
Engine oil
3.
Power steering fluid
4.
Drive line oil
1-21.
The fuel filter operates by passing
fuel through a porous material that
blocks particles large enough to
cause a problem in the fuel system.
1.
True
2.
False
2
