4-33.
In addition to reducing engine
speed fluctuations, the flywheel
often functions in which of the
following ways?
1.
As a power takeoff for the
camshaft and a pressure surface
for the clutch
2.
As a pressure surface for the
clutch and a starting system
gear
3.
As a starting system gear and a
power takeoff for the fuel pump
4.
As a power takeoff for the fuel
pump and a timing reference for
the ignition system
4-34.
Which of the following parts is/are
NOT included in the valve-actuating
mechanism?
1.
The pushrods
2.
The rocker arms
3.
The camshaft
4.
The crankshaft
4-35.
What is the function of the
eccentric lobes on a camshaft?
1.
To open the intake and exthaust
valves at the proper times
2.
To return the intake and
exhaust valves to their seats
3.
To add to the pressure exerted
by the valve springs
4.
To regulate the pressure
exerted by the valve springs
4-36.
Relative to engine speed, how fast
does the camshaft of an 8-cylinder,
4-stroke/cycle engine turn?
1.
One-eighth as fast
2.
One-fourth as fast
3.
One-half as fast
4.
Twice as fast
4-37.
Camshaft followers are the parts of
the valve-actuating mechanism that
contact the camshaft.
Which of the
following terms is another name for
camshaft followers?
1.
Cam lobe
2.
Rocker arms
3.
Valve stern
4.
Valve lifters
4-38.
4-39.
4-40.
4-41.
Which of the following mechanisms
keep the crankshaft and camshaft
turning in the proper rotation to
one another so that the valves open
and Close at the proper time?
1.
The pushrods
2.
The timing gears
3.
The rocker arms
4.
The valve mechanisms
By what means are the timing gears
at the camshaft and crankshaft
positioned so they CANNOT skip?
1.
They are welded
2.
They are threaded
3.
They fire keyed
4.
They are bolted
In the diesel engine fuel system,
which of the following component
replaces the carburetor?
1.
The fuel injection mechanisms
2.
The fuel pump
3.
The fuel filter
4.
All of the above
What power train part of a 4wheel
drive heavy truck is NOT part of a
2--wheel drive heavy truck?
1.
The differential
2.
The multiple disk clutch
3.
The 4speed transmission
4.
The transfer case
4-42.
What is the function of the clutch
in the power train of a motor
vehicle that is starting to move
forward from a still position?
1.
To dampen vibration in the
transmission system
2.
To allow the brakes to clutch
or hold until there is enough
power for the vehicle to move
forward
3.
To transmit power to the wheels
through the dead axles
4.
To allow the engine to take up
the load gradually
37