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Examen

NCCCO CORE Correct Questions & Answers(RATED A+)

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Subido en
16-10-2024
Escrito en
2024/2025

Before leveling a mobile crane on outriggers, an operator should ensure: - ANSWERthere 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? - ANSWERKeeping 90 degree angle between cylinder rod and pad What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - ANSWERSeparate 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? - ANSWER6 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? - ANSWER1 Type 1 rotation resistant hoist wire rope has a design factor of: - ANSWER5 to 1 How many randomly distributed broken wires in rotation- resistant hoist wire rope are considered for replacement? - ANSWER2 broken wires in 6 rope diameters The term net capacity is best defined by which of the terms listed below? - ANSWERGross 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? - ANSWERManufacturer When lifting loads on tires, mobile cranes are rated at what percentage of tipping? - ANSWER75% How does the effective weight of a slowed extension relate to the actual weight of the extension? - ANSWERHigher than the actual weight. When load radius is between radii values, the operator must use the: - ANSWERlonger radius

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NCCCO CORE Correct Questions &
Answers(RATED A+)


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



What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - ANSWERSeparate
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? - ANSWER6



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? - ANSWER1



Type 1 rotation resistant hoist wire rope has a design factor of: - ANSWER5 to 1



How many randomly distributed broken wires in rotation- resistant hoist wire rope are considered for
replacement? - ANSWER2 broken wires in 6 rope diameters



The term net capacity is best defined by which of the terms listed below? - ANSWERGross 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? - ANSWERManufacturer



When lifting loads on tires, mobile cranes are rated at what percentage of tipping? - ANSWER75%

, How does the effective weight of a slowed extension relate to the actual weight of the extension? -
ANSWERHigher than the actual weight.



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



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



Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? -
ANSWERCollapsing 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: - ANSWERFollow 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? - ANSWERThe radius increase.



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



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



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



A sudden start or stop of the hoisting function while operating a mobile crane can produce a: -
ANSWERdynamic load



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

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Institución
NCCCO CORE
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NCCCO CORE

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Subido en
16 de octubre de 2024
Número de páginas
11
Escrito en
2024/2025
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