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NCCCO LARGE HYDRAULICS B EXAM REVIEW QUESTIONS AND ANSWERS
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NCCCO LARGE HYDRAULICS B EXAM REVIEW QUESTIONS AND ANSWERS
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NCCCO LARGE HYDRAULICS B EXAMREVIEW QUESTIONS AND ANSWERS
The weight of a load is 63,275 LBS. How many parts of line will be required if the line
pull of the wire rope is 12,500 LBS.? - Answer-6
Unless the manufacture states otherwise, net capacity of the crane is the capacity listed
on the load chart: - Answer-minus the weight of all the rigging and all the attachments
Unless the manufacture states otherwise, truck cranes generally have no capacity over
which quadrant? - Answer-Front
If a bold line is shown on a load chart, the capacities below the bold line are; - Answer-
Based on stability of the crane
Rough terrain crane capacities are usually greater over the; - Answer-Front
A shaded area on a load chart generally indicates the capacities listed are: - Answer-
Based on structural strength of the crane
Asterisks (*) are sometimes used on load charts. If they are associated with capacities,
they generally indicate those capacities are; - Answer-Based on structural strength of
the crane
Lifting from the jib "on rubber" is; - Answer-Prohibited by most manufactures
When calculating net capacity, the weight of the rope is; - Answer-Considered a
deduction only if the manufacturer has indicated such
If a jib is erected, but the lift is not being made from the jib, you should make a
deduction from the gross capacities based on; - Answer-The effective weight of the jib
If full extension of all four outriggers is not possible, and your crane does not have an
intermediate outrigger chart, any lift made should be on the; - Answer-On-rubber chart
There are three essential elements necessary to calculate the safe working load limit of
a crane. When known, any two can be used to calculate the third. One is boom length.
Another is radius of the load. The third is; - Answer-The boom angle
If the actual values of boom length, boom angle, and radius do not correspond to any
listed on the load chart, you should use; - Answer-The next longer boom length and
next longer radius
During a lift, the length of the boom is known and the angle is known, what aid is
available to help determine the radius? - Answer-The range diagram
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