NCCCO BOARD EVALUATION 2026
QUESTIONS WITH 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.
QUESTIONS WITH 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.
