NCCCO MOBILE CRANE EXAM PREP 2026
COMPLETE STUDY GUIDE GRADED A+
◉ A mobile crane's jib is offset 15° versus its original 0° offset, but
the boom angle remains unchanged. In this situation, the load
radius: Answer: increases.
◉ What is the difference between an anti-two-block warning device
and an anti-two-block prevention device? Answer: Warning device
only warns, but prevention devices will stop the functions.
◉ How can the LMI's boom length or load radius reading be
verified? Answer: Actual measurements.
◉ On mobile cranes, what does the boom angle indicator show the
operator? Answer: Angle of boom to horizontal.
◉ What is the device called that automatically stops the boom when
it nears the cranes maximum angle? Answer: Boom hoist limiting.
◉ When the number of layers of wire rope on a drum increases the:
Answer: allowable line pull decreases.
,◉ On a mobile crane, side loading of the boom could be caused by
which of the following? Answer: Starting or stopping the swing too
rapidly.
◉ Which person listed below, has the responsibility for determining
the correct weight of a load? Answer: Lift Director
◉ What must an operator do when an operator leaves the controls
of the crane for an extended period of time? Answer: Apply all
brakes and dogs, and lower the load to the ground.
◉ Abruptly stopping a rapid swing on a long-boom mobile crane will
produce what major effect? Answer: Collapsing the boom.
◉ When should a tag line be used, during the hoisting of material?
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?
Answer: 75%
◉ When lifting a load with two mobile cranes, it is very important
to: Answer: keep the hoist lines of both cranes vertical.
, ◉ If lifting a load with two mobile cranes of different rated
capacities, the crane with the larger rated capacity should: Answer:
be hooked at a distance closer to the loads center of gravity.
◉ When determining the position to a mobile crane should be left in
night, with high winds in the forecast the operator should: Answer:
follow manufacturers recommendations.
◉ When performing a multiple crane lift it is important for the
operator's of each crane to understand that: 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? Answer: Load will increase when lifting the load out
of the water.
◉ When lifting over water with a personnel platform, what are the
occupant of the platform required to wear? Answer: A flotation
device.
◉ 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.
COMPLETE STUDY GUIDE GRADED A+
◉ A mobile crane's jib is offset 15° versus its original 0° offset, but
the boom angle remains unchanged. In this situation, the load
radius: Answer: increases.
◉ What is the difference between an anti-two-block warning device
and an anti-two-block prevention device? Answer: Warning device
only warns, but prevention devices will stop the functions.
◉ How can the LMI's boom length or load radius reading be
verified? Answer: Actual measurements.
◉ On mobile cranes, what does the boom angle indicator show the
operator? Answer: Angle of boom to horizontal.
◉ What is the device called that automatically stops the boom when
it nears the cranes maximum angle? Answer: Boom hoist limiting.
◉ When the number of layers of wire rope on a drum increases the:
Answer: allowable line pull decreases.
,◉ On a mobile crane, side loading of the boom could be caused by
which of the following? Answer: Starting or stopping the swing too
rapidly.
◉ Which person listed below, has the responsibility for determining
the correct weight of a load? Answer: Lift Director
◉ What must an operator do when an operator leaves the controls
of the crane for an extended period of time? Answer: Apply all
brakes and dogs, and lower the load to the ground.
◉ Abruptly stopping a rapid swing on a long-boom mobile crane will
produce what major effect? Answer: Collapsing the boom.
◉ When should a tag line be used, during the hoisting of material?
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?
Answer: 75%
◉ When lifting a load with two mobile cranes, it is very important
to: Answer: keep the hoist lines of both cranes vertical.
, ◉ If lifting a load with two mobile cranes of different rated
capacities, the crane with the larger rated capacity should: Answer:
be hooked at a distance closer to the loads center of gravity.
◉ When determining the position to a mobile crane should be left in
night, with high winds in the forecast the operator should: Answer:
follow manufacturers recommendations.
◉ When performing a multiple crane lift it is important for the
operator's of each crane to understand that: 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? Answer: Load will increase when lifting the load out
of the water.
◉ When lifting over water with a personnel platform, what are the
occupant of the platform required to wear? Answer: A flotation
device.
◉ 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.
