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Nccco Core Questions And Answers With Verified Solutions 100% Correct Latest Updated 2024/2025
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Nccco Core Questions And Answers With Verified Solutions 100% Correct Latest Updated 2024/2025
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Nccco Core Questions And AnswersWith Verified Solutions 100% Correct
Latest Updated 2024/2025
Before leveling a mobile crane on outriggers, an operator should ensure: -
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? - ANSWER✔✔Keeping 90 degree angle between
cylinder rod and pad
What is the primary purpose fir a rooster sheave or auxiliary boom point sheave?
- 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? - 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? - ANSWER✔✔1
Type 1 rotation resistant hoist wire rope has a design factor of: - ANSWER✔✔5 to
1
How many randomly distributed broken wires in rotation- resistant hoist wire
rope are considered for replacement? - ANSWER✔✔2 broken wires in 6 rope
diameters
The term net capacity is best defined by which of the terms listed below? -
ANSWER✔✔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? - ANSWER✔✔Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage of
tipping? - ANSWER✔✔75%
, How does the effective weight of a slowed extension relate to the actual weight
of the extension? - ANSWER✔✔Higher than the actual weight.
When load radius is between radii values, the operator must use the: -
ANSWER✔✔longer radius
Why should only approved attachments or extra counterweights provided by the
manufacturer be placed on the rear of the crane? - 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: - ANSWER✔✔increases
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what
major effect? - ANSWER✔✔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: - 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? -
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? - ANSWER✔✔Decreases stability.
Backward stability of a mobile crane is tested in which configuration listed below?
- ANSWER✔✔Basic boom at minimum angle with no load
Deflection of the boom while operating a mobile crane will increase? -
ANSWER✔✔Load Radius (Swings out)
A sudden start or stop of the hoisting function while operating a mobile crane can
produce a: - ANSWER✔✔dynamic load
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