NCCCO CORE PREP TEST
ALTERNATE 2026 CRANE
CERTIFICATION QUESTIONS
ANSWERS 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?
ALTERNATE 2026 CRANE
CERTIFICATION QUESTIONS
ANSWERS 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?
