1
NCCCO CORE EXAM 2026/2027
QUESTIONS WITH VERIFIED
ANSWERS
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
What must an operator do when an operator leaves the controls of the crane
from an extended period of time? - correct-answer -Apply all brakes and dogs,
and lower the load to the ground
When should a tag line be used, during the hoisting of material? - correct-answer -
When the rotation of the load would be dangerous
What percentage of the rated capacity of a mobile crane must be used when
lifting with two cranes attached to the same load? - correct-answer -75%
When lifting a load with two mobile cranes, it is very important to: - correct-
answer -Keep the hoist lines of both cranes vertical
, 3
If lifting a load with two mobile cranes of different rated capacities, the crane with
the larger rated capacity should: - correct-answer -Be hooked at a distance closer
to the loads center of gravity
When performing a multiple crane lift is is important for the operator's of each
crane to understand that: - correct-answer -The weight may increase if the other
crane lands the load
When lifting loads that are submerged under water with a mobile crane, what is
one of the conditions that the operator should be familiar with? - correct-answer -
Load will increase when lifting the load out of the water
When lifting over water with a personnel platform, what are the occupants of the
platform required to wear? - correct-answer -A floatation device
What is the minimum pitch diameter used for sheaves in a boom hoist reeving
system using rotation resistant wire rope? - correct-answer -Not less than 18
times rope diameter
When can capacity altering modifications be made to mobile cranes? - correct-
answer -When permission is given by the crane manufacturer
A crane is at the point of instability when the crane's leverage on the load equals:
- correct-answer -100% of the load's leverage on the crane
NCCCO CORE EXAM 2026/2027
QUESTIONS WITH VERIFIED
ANSWERS
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
What must an operator do when an operator leaves the controls of the crane
from an extended period of time? - correct-answer -Apply all brakes and dogs,
and lower the load to the ground
When should a tag line be used, during the hoisting of material? - correct-answer -
When the rotation of the load would be dangerous
What percentage of the rated capacity of a mobile crane must be used when
lifting with two cranes attached to the same load? - correct-answer -75%
When lifting a load with two mobile cranes, it is very important to: - correct-
answer -Keep the hoist lines of both cranes vertical
, 3
If lifting a load with two mobile cranes of different rated capacities, the crane with
the larger rated capacity should: - correct-answer -Be hooked at a distance closer
to the loads center of gravity
When performing a multiple crane lift is is important for the operator's of each
crane to understand that: - correct-answer -The weight may increase if the other
crane lands the load
When lifting loads that are submerged under water with a mobile crane, what is
one of the conditions that the operator should be familiar with? - correct-answer -
Load will increase when lifting the load out of the water
When lifting over water with a personnel platform, what are the occupants of the
platform required to wear? - correct-answer -A floatation device
What is the minimum pitch diameter used for sheaves in a boom hoist reeving
system using rotation resistant wire rope? - correct-answer -Not less than 18
times rope diameter
When can capacity altering modifications be made to mobile cranes? - correct-
answer -When permission is given by the crane manufacturer
A crane is at the point of instability when the crane's leverage on the load equals:
- correct-answer -100% of the load's leverage on the crane
