NCCCO CORE FINAL EXAM QUESTIONS AND

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NCCCO CORE FINAL EXAM QUESTIONS AND

ANSWERS LATEST UPDATE / (100%

CORRECT)

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Before leveling a mobile crane on outriggers, an operator should ensure: -

(answer)there is no weight of the crane bearing on any tires

Operating a mobile crane with a long boom, on uneven ground, what support condition should be considered? - (answer)Keeping 90 degree angle between cylinder rod and pad

What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - (answer)Separate the boom hoist lines

How many randomly broken wires in a lay length must there be on a mobile cranes hoist line, before it should be removed from service? - (answer)6

On a mobile crane, how many broken wires are permitted at the end connection of a pendent before it must be taken out of service? - (answer)1

Type 1 rotation resistant hoist wire rope has a design factor of: - (answer)5 to 1

How many randomly distributed broken wires in rotation- resistant hoist wire rope are considered for replacement? - (answer)2 broken wires in 6 rope diameters

The term net capacity is best defined by which of the terms listed below? - (answer)Gross capacity minus capacity deductions

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Mobile cranes that are set up on barges, shall have a list chart provided by which of the entities listed below? - (answer)Manufacturer

When lifting loads on tires, mobile cranes are rated at what percentage of tipping? - (answer)75%

How does the effective weight of a slowed extension relate to the actual weight of the extension? - (answer)Higher than the actual weight.

When load radius is between radii values, the operator must use the: -

(answer)longer radius

Why should only approved attachments or extra counterweights provided by the manufacturer be placed on the rear of the crane? - (answer)They could cause a backward stability problem.

A mobile crane's jib is offset 15º versus its original 0º offset, but the boom

angle remains unchanged. In this situation, the load radius: -

(answer)increases

Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? - (answer)Collapsing the boom.

When determining the position to a mobile crane should be left in over night,

when high winds in the forecast the operator should: - (answer)Follow the

manufacturers recommendations.

If a mobile crane is NOT set-up level and the operator swings the load from the high side to the low side, what effect will that have on the radius? - (answer)The radius increase.

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