NCCCO CORE PRACTICE EXAM

NCCCO CORE PRACTICE EXAM

WITH ANSWERS TAGGED A+

✔✔The approximate percentage of strength of choker, vertical, and basket hitches

respectively are: - ✔✔75%, 100%, 200%

✔✔According to ASME which of the following listed below shall NOT be used for the suspension system on suspended personnel platforms? - ✔✔Synthetic web bridle

✔✔When rigging a bundle of pipe or tubing, which of the following would provide the best contact between sling and load? - ✔✔Double wrap choker

✔✔For any signal other than emergency stop, who is permitted to give hand signals to the crane operator during a lift - ✔✔A qualified signal person

✔✔Move slowly hand signal - ✔✔

✔✔Use whipline hand signal - ✔✔

✔✔What is the first element of voice signals given to a crane operator prior to the lift? - ✔✔Function and direction

✔✔According to OSHA, each series of voice signals contain how many elements? - ✔✔Three

✔✔ 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

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✔✔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

✔✔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.

✔✔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? - ✔✔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? - ✔✔Decreases stability.

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

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

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