NCCCO CORE ACTUAL EXAM SCRIPT
2026 QUESTIONS AND SOLUTIONS
GRADED A+
◉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)
2026 QUESTIONS AND SOLUTIONS
GRADED A+
◉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)
