LATEST VERIFIED QUESTIONS AND 100%
CORRECT ANSWERS ALREADY GRADED
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Which of the following is an accurate statement about luffing jibs? - ANS-It raises and lowers
independent from the boom
What is the weakest quadrant of a boom truck? - ANS-Front
What effect would blocking up the ends of the tracks have on a crane? - ANS-It would increase capacity
over the ends
The tipping axis of a crawler crane is? - ANS-It depends if the idler or sprocket are offset from track
rollers
According to ASME B30.5 what percentage should not be exceeded on a mobile crane during a load
test? - ANS-100%
, From strongest to weakest put the following hitches in order - ANS-Basket, vertical, choker
Which of the following should synthetic slings not be used around? - ANS-Acid
How often should you inspect a running rope? - ANS-Daily
What can be done to prevent wire rope from unraveling when being cut - ANS-Seizing
Ground bearing pressure is: - ANS-The pressure created by the weight of the crane and the load onto
the outriggers
What is most important when determine the capacity of the jib? - ANS-Angle
Running ropes should be removed from service if there are______ randomly distributed broken wires in
a lay or______ broken wires in a strand in a lay - ANS-6,3
Rotation resistant ropes should be removed from service if there are______ broken wires and six rope
diameters or_____ broken wires in 30 rope diameters - ANS-2,4
The radius on a crane chart refers to? - ANS-Center of rotation to center of gravity of the load or hook
What percentage is the manufacture rate of capacity of a mobile crane on outriggers? - ANS-85%
What percentage is the manufacture rated capacity of a rough terrain crane on rubber? - ANS-75%
What is Lay length? - ANS-The distance required for a strand to make a complete revolution around the
rope
What is one problem lubricating wire rope can cause? - ANS-Obstructed view when inspecting the rope
What would What would call for a running rope to be taken out of service? - ANS-Six randomly
distributed broken wires and one Lay or three in one strand and one lay