LATEST NCCCO CORE EXAM -

LATEST NCCCO CORE EXAM -

QUESTIONS WITH 100% CORRECT ANSWERS

Before leveling a mobile crane on outriggers, an operator should ensure: - CORRECT 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? - CORRECT ANSWER Keeping 90 degree angle between cylinder rod and pad

What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - CORRECT 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? - CORRECT 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? - CORRECT ANSWER 1

Type 1 rotation resistant hoist wire rope has a design factor of: - CORRECT ANSWER

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

The term net capacity is best defined by which of the terms listed below? - CORRECT ANSWER Gross capacity minus capacity deductions 1 / 3

LATEST NCCCO CORE EXAM -

QUESTIONS WITH 100% CORRECT ANSWERS

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

When lifting loads on tires, mobile cranes are rated at what percentage of tipping? -

CORRECT ANSWER 75%

How does the effective weight of a slowed extension relate to the actual weight of the extension? - CORRECT ANSWER Higher than the actual weight.

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

Why should only approved attachments or extra counterweights provided by the manufacturer be placed on the rear of the crane? - CORRECT 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: - CORRECT ANSWER

increases

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

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LATEST NCCCO CORE EXAM -

QUESTIONS WITH 100% CORRECT ANSWERS

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

winds in the forecast the operator should: - CORRECT 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? - CORRECT ANSWER The radius increase.

Increasing the distance from the crane's center of gravity to the tipping axis will have what effect on the mobile crane? - CORRECT ANSWER Decreases stability.

Backward stability of a mobile crane is tested in which configuration listed below? - CORRECT ANSWER Basic boom at minimum angle with no load

Deflection of the boom while operating a mobile crane will increase? - CORRECT ANSWER Load Radius (Swings out)

A sudden start or stop of the hoisting function while operating a mobile crane can

produce a: - CORRECT ANSWER dynamic load

Before lifting an occupied personnel platform on a job site, which of the following applies? - CORRECT ANSWER Use 50% of rated capacity, Trial lift to anticipated weight, Ensure rigging dedicated to platform only.

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