8-10.
811.
8-l2.
813.
8-14.
A push cat operator must ensure
that the reinforced section of the
dozer blade is centered on what
component of the scraper?
1.
Gooseneck
2.
Push block
3. Spill guard
4.
Bowl stiffener
When traveling over a slippery haul
road, you should carry the scraper
bowl in what manner?
1.
As high as possible
2.
As low as possible
3.
About halfway between the
highest and lowest position
4.
At the height the material
is to be discharged
After the apron opening has been
adjusted and the dirt flowing
through the opening lessens, the
operator should engage which of
the following levers to finish
unloading the scraper bowl?
1.
Bowl
2.
Apron
3.
Ejector
4.
Power takeoff
What term is used to describe
the technique of obtaining a
heap scraper load of sand?
1.
Back-track loading
2.
Shuttle loading
3.
Optimum loading
1.
1
2.
2
3.
3
4.
4
4. Pump loading
At the start of a pump loading
operations, an operator should
adjust the opening of the apron
to how many feet?
8-15.
Oversize objects, such as large
rocks, can cause damage to a
scraper by denting, bending, or
straining parts.
1.
True
2.
False
Learning Objective:
Recognize
the principles of scraper pro-
duction techniques.
8-16.
Which of the following types of
loading techniques uses the force
of gravity on the scraper to get
larger loads in less time?
1.
High-speed
2.
Downhill
3.
Shuttle
4.
Straddle
817.
When you are straddle loading, the
island left between the first and
second scraper cut should be what
width, in feet?
1.
4 to 5
2.
10 to 12
3.
15 to 20
4.
25 to 30
8-18.
Which of the following types of
loading is used for shortcuts when
it is possible to load in both
directions?
1.
Downhill
2.
Straddle
3.
Back track
4.
Shuttle
8-19.
During optimum loading operations,
push-loaded scrapers should be
loaded within 1 minute and within a
maximum distance of how many feet?
1.
25
2.
50
3.
75
4.
100
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