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NCCCO CORE Exam Questions and Verified Detailed Answers | Rated A+

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

✔✔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? - ✔✔Keeping 90 degree angle between cylinder rod and pad What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - ✔✔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? - ✔✔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? - ✔✔1 Type 1 rotation resistant hoist wire rope has a design factor of: - ✔✔5 to 1 How many randomly distributed broken wires in rotation- resistant hoist wire rope are considered for replacement? - ✔✔2 broken wires in 6 rope diameters The term net capacity is best defined by which of the terms listed below? - ✔✔Gross capacity minus capacity deductions 1 / 2

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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? - ✔✔Manufacturer When lifting loads on tires, mobile cranes are rated at what percentage of tipping? - ✔✔75% How does the effective weight of a slowed extension relate to the actual weight of the extension? - ✔✔Higher than the actual weight.

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

✔✔longer radius Why should only approved attachments or extra counterweights provided by the manufacturer be placed on the rear of the crane? - ✔✔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: - ✔✔increases

Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? - ✔✔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: - ✔✔Follow the

manufacturers recommendations.

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