9-11.
9-12.
9-13.
9-14.
9-15.
Pick and carry crane operations are
directed by the crane crew leader.
1.
True
2.
False
The capacity of a crane may change
when rotating a load from one
quadrant to another.
1.
True
2.
False
Information concerning a crane
capacity in each quadrant of
operations can be found at what
location?
1.
On the equipment status board
2.
In the rigging loft
3.
On the crane load chart
4.
In the dispatch office
Learning Objective:
Recognize
the components of lattice and
telescopic boom cranes.
A basic boom consists of which
of the following components?
1.
The boom butt, a 10 foot
extension,
and a boom tip
2.
The boom butt, boom tip,
and a jib
3.
The boom butt and a boom tip
4.
The boom butt, a 20-foot
extension,
and a boom tip
Manufacturers have set a zero
tolerance for what type of
defect(s) or damage to any
area of a lattice boom?
1.
Rust
2.
Bent lacings or cords
3.
Cracked welds
4.
All of the above
9-16.
917.
9-18.
9-19.
920.
9-21.
Which of the following NAVFAC
publications contains the set
guidelines for cranes having
structural damage?
1.
P405
2.
P307
3.
P306
4.
P-300
The rule of thumb used when mixing
short boom sections with long
sections is to install the longer
sections closest to the boom butt.
1.
True
2.
False
An operator of a crane should NOT
rely on the boom angle indicator
for radius accuracy especially when
lifts exceed what percentage of the
rated capacity?
1.
60%
2.
65%
3.
70%
4.
75%
Each boom section has two pendants.
If one pendant is bad, both
pendants must be replaced.
1.
True
2.
False
On most cranes, the function of the
jib is to increase the lift height.
1.
True
2.
False
The bridle assembly is the
connection point for which of the
following components of a crane?
1.
Fairlead
2.
Pile driver hammer
3.
Pendant lines
4.
Master clutch
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