1|Page
Mobile Crane NCCER 2025, crane operator exam,
NCCER 100 questions And answers, rigging and
lifting, crane safety test, equipment inspection,
verified NCCER answers
When the crane is over-the side, over-the-front, or over-
the rear configurations, the center of gravity ids shifted
either close or farther away from the? - .....ANSWER
...✔✔ Tipping axis (point)
When the crane is over-the side, over-the-front, or over-
the rear configurations, the center of gravity its shifted
either close or farther away from the tipping axis
(point); this in turn may? - .....ANSWER ...✔✔ Increase
or decrease the crane's leverage
What is the crane weight x horizontal distance from the
center of gravity of the crane to the tipping axis? -
.....ANSWER ...✔✔ Crane's leverage
A crane's leverages (crane weight x horizontal distance
from the center of gravity of the crane to the tipping
axis) has to be greater than the? - .....ANSWER ...✔✔
,2|Page
Load's average (load weight x horizontal distance from
the center of gravity of the load to the tipping axis) to
make a lift
What is the load weight x horizontal distance from the
center of gravity of the load to the tipping axis? -
.....ANSWER ...✔✔ Load's leverage
A crane's leverages (crane weight x horizontal distance
from the center of gravity of the crane to the tipping
axis) has to be greater than the load's average (load
weight x horizontal distance from the center of gravity
of the load to the tipping axis) to make a lift. If it isn't
then ___ occurs? - .....ANSWER ...✔✔ Tipping
The crane manufacturer designs a ___ chart for each
model that is sold? - .....ANSWER ...✔✔
Load/capacity
The load/capacity chart for each model crane may
even be ___ specific? - .....ANSWER ...✔✔ Serial-
number
The load/capacity chart for each model crane may
even be serial-number specific, meaning a? -
,3|Page
.....ANSWER ...✔✔ Different load/capacity chart is
required for each crane, even if a manufacturer only
make one model
What will bear the model number and serial number or
other identifier (the part number, for ex) of the crane to
which it applies? - .....ANSWER ...✔✔ Load/capacity
chart
What cranes can be truck mounted or crawler mounted?
- .....ANSWER ...✔✔ Lattice boom cranes
What cranes have hydraulic counterparts? - .....ANSWER
...✔✔ Lattice boom cranes
Lattice boom cranes have hydraulic counterparts, and
these cranes are capable of much longer? - .....ANSWER
...✔✔ Boom lengths
A crane may be ___ before any signs of tipping are
evident? - .....ANSWER ...✔✔ Overloaded
A crane an be ___ before tipping occurs? - .....ANSWER
...✔✔ Overstressed or can fail structurally
, 4|Page
The capacities on a load/capacity chart are limited by
either the? - .....ANSWER ...✔✔ -structural strength of
the crane (as determined by ANSI/SAE J987 guidelines)
-stability (the crane's ability to resist tipping)
What is the crane's ability to resist tipping? -
.....ANSWER ...✔✔ Stability
The load/capacity charts of mobile cranes are based on
the configuration of the crane at the time of the? -
.....ANSWER ...✔✔ Lift
Capacities on-outriggers? - .....ANSWER ...✔✔ Do not
exceed 85%
Capacities on rubber? - .....ANSWER ...✔✔ Do not
exceed 75%
What is a side view of a crane with its full range of
boom lengths, jibs, and boom extensions? - .....ANSWER
...✔✔ Range diagram
Mobile Crane NCCER 2025, crane operator exam,
NCCER 100 questions And answers, rigging and
lifting, crane safety test, equipment inspection,
verified NCCER answers
When the crane is over-the side, over-the-front, or over-
the rear configurations, the center of gravity ids shifted
either close or farther away from the? - .....ANSWER
...✔✔ Tipping axis (point)
When the crane is over-the side, over-the-front, or over-
the rear configurations, the center of gravity its shifted
either close or farther away from the tipping axis
(point); this in turn may? - .....ANSWER ...✔✔ Increase
or decrease the crane's leverage
What is the crane weight x horizontal distance from the
center of gravity of the crane to the tipping axis? -
.....ANSWER ...✔✔ Crane's leverage
A crane's leverages (crane weight x horizontal distance
from the center of gravity of the crane to the tipping
axis) has to be greater than the? - .....ANSWER ...✔✔
,2|Page
Load's average (load weight x horizontal distance from
the center of gravity of the load to the tipping axis) to
make a lift
What is the load weight x horizontal distance from the
center of gravity of the load to the tipping axis? -
.....ANSWER ...✔✔ Load's leverage
A crane's leverages (crane weight x horizontal distance
from the center of gravity of the crane to the tipping
axis) has to be greater than the load's average (load
weight x horizontal distance from the center of gravity
of the load to the tipping axis) to make a lift. If it isn't
then ___ occurs? - .....ANSWER ...✔✔ Tipping
The crane manufacturer designs a ___ chart for each
model that is sold? - .....ANSWER ...✔✔
Load/capacity
The load/capacity chart for each model crane may
even be ___ specific? - .....ANSWER ...✔✔ Serial-
number
The load/capacity chart for each model crane may
even be serial-number specific, meaning a? -
,3|Page
.....ANSWER ...✔✔ Different load/capacity chart is
required for each crane, even if a manufacturer only
make one model
What will bear the model number and serial number or
other identifier (the part number, for ex) of the crane to
which it applies? - .....ANSWER ...✔✔ Load/capacity
chart
What cranes can be truck mounted or crawler mounted?
- .....ANSWER ...✔✔ Lattice boom cranes
What cranes have hydraulic counterparts? - .....ANSWER
...✔✔ Lattice boom cranes
Lattice boom cranes have hydraulic counterparts, and
these cranes are capable of much longer? - .....ANSWER
...✔✔ Boom lengths
A crane may be ___ before any signs of tipping are
evident? - .....ANSWER ...✔✔ Overloaded
A crane an be ___ before tipping occurs? - .....ANSWER
...✔✔ Overstressed or can fail structurally
, 4|Page
The capacities on a load/capacity chart are limited by
either the? - .....ANSWER ...✔✔ -structural strength of
the crane (as determined by ANSI/SAE J987 guidelines)
-stability (the crane's ability to resist tipping)
What is the crane's ability to resist tipping? -
.....ANSWER ...✔✔ Stability
The load/capacity charts of mobile cranes are based on
the configuration of the crane at the time of the? -
.....ANSWER ...✔✔ Lift
Capacities on-outriggers? - .....ANSWER ...✔✔ Do not
exceed 85%
Capacities on rubber? - .....ANSWER ...✔✔ Do not
exceed 75%
What is a side view of a crane with its full range of
boom lengths, jibs, and boom extensions? - .....ANSWER
...✔✔ Range diagram
