1
NCCCO CORE QUESTIONS AND VERIFIED
ANSWERS 2026
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
, 2
Type 1 rotation resistant hoist wire rope has a design factor of: - correct-answer -5
to 1
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
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.
, 3
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.
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.
NCCCO CORE QUESTIONS AND VERIFIED
ANSWERS 2026
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
, 2
Type 1 rotation resistant hoist wire rope has a design factor of: - correct-answer -5
to 1
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
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.
, 3
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.
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.
