4-29.
What is the safe working load
of a 3/4-inch hoist wire rope?
1.
4.5 tons
2.
6.0 tons
3.
9.7 tons
4.
10.4 tons
4-30.
What is the breaking strength
of a 3/4-inch hoist wire rope?
1.
22.5 tons
2.
30.0 tons
3.
48.5 tons
4.
52.0 tons
4-31.
What is the breaking strength of
a 3/4-inch wire rope rigged with
a wedge socket?
1.
36.4 tons
2.
34.0 tons
3.
21.0 tons
4.
15.8 tons
4-32.
What is the safety factor of a
3/4-inch wire rope used as rope
that winds on drums or passes
on sheaves?
1.
4.50 tons
2.
6.00 tons
3.
9.70 tons
4.
10.4 tons
4-33.
What is the test weight for a
3/4-inch wire rope rigged on a
mobile crane?
1.
9,900 pounds
2.
13,200 pounds
3.
21,340 pounds
4.
22,880 pounds
4-34.
What percentage of crane capacity
is lost when the crane has a short
boom at maximum radius and is
3 degrees out of level?
1.
30%
2.
20%
3.
15%
4.
10%
4-35.
4-36.
4-37.
4-38.
4-39.
When conducting a maximum load
test, you hold the load clear of
the ground without the boom and
load hoist pawls engaged for what
time period?
1.
5 minutes
2.
10 minutes
3.
15 minutes
4.
20 minutes
When conducting a dynamic test of
the auxiliary hoist, you must wait
what length of time after raising
and lowering the test load before
continuing the test?
1.
20 minutes
2.
15 minutes
3.
10 minutes
4.
5 minutes
Cranes rigged for clamshell,
dragline, or pile-driving
operations should be weight-tested
according to what factor?
1.
The maximum capacity
of the crane
2.
The minimum capacity
of the crane
3.
The safe working load for
the size of wire rope used
4.
The safe working load on
the load charts
Retesting of the crane is required
when changing from clamshell to
dragline.
1.
True
2.
False
At which of the following locations
is the certification of load test
and condition inspection filed?
1.
Equipment history jacket
2.
Unit safety office
3.
Protective container on
the crane
4.
All of the above
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