NCCCO CORE EXAM WITH CORRECT

NCCCO CORE EXAM WITH CORRECT

QUESTIONS AND ANSWERS

A)Before leveling a mobile crane on outriggers, an operator should

ensure: - CORRECT-ANSWERS>>>>>there is no weight of the crane

bearing on any tires B)Operating a mobile crane with a long boom, on uneven ground, what support condition should be considered? - CORRECT- ANSWERS>>>>>Keeping 90 degree angle between cylinder rod and pad C)What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - CORRECT-ANSWERS>>>>>Separate the boom hoist lines D)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-ANSWERS>>>>>6 E)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-ANSWERS>>>>>1

F)Type 1 rotation resistant hoist wire rope has a design factor of: -

CORRECT-ANSWERS>>>>>5 to 1 1 / 3

G)How many randomly distributed broken wires in rotation- resistant hoist wire rope are considered for replacement? - CORRECT- ANSWERS>>>>>2 broken wires in 6 rope diameters H)The term net capacity is best defined by which of the terms listed below? - CORRECT-ANSWERS>>>>>Gross capacity minus capacity deductions I)Mobile cranes that are set up on barges, shall have a list chart provided by which of the entities listed below? - CORRECT- ANSWERS>>>>>Manufacturer J)When lifting loads on tires, mobile cranes are rated at what percentage of tipping? - CORRECT-ANSWERS>>>>>75% K)How does the effective weight of a slowed extension relate to the actual weight of the extension? - CORRECT-ANSWERS>>>>>Higher than the actual weight.

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

CORRECT-ANSWERS>>>>>longer radius M)Why should only approved attachments or extra counterweights provided by the manufacturer be placed on the rear of the crane? - CORRECT-ANSWERS>>>>>They could cause a backward stability problem.N)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-ANSWERS>>>>>increases 2 / 3

O)Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? - CORRECT-ANSWERS>>>>>Collapsing the boom.P)When determining the position to a mobile crane should be left in over

night, when high winds in the forecast the operator should: - CORRECT-

ANSWERS>>>>>Follow the manufacturers recommendations.Q)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-ANSWERS>>>>>The radius increase.R)Increasing the distance from the crane's center of gravity to the tipping axis will have what effect on the mobile crane? - CORRECT- ANSWERS>>>>>Decreases stability.S)Backward stability of a mobile crane is tested in which configuration listed below? - CORRECT-ANSWERS>>>>>Basic boom at minimum angle with no load T)Deflection of the boom while operating a mobile crane will increase? - CORRECT-ANSWERS>>>>>Load Radius (Swings out) U)A sudden start or stop of the hoisting function while operating a mobile

crane can produce a: - CORRECT-ANSWERS>>>>>dynamic load

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

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