Mobile Crane NCCER 2025, crane operator exam,
NCCER 100 questions And answers, rigging and lifting,
crane safety test, equipment inspection, verified NCCER
answers
When determining the "gross load" the best method is: - ans -Get an accurate
load weight and add the rigging
By order of strength which is correct - ans -Basket, Vertical, Choker
Primary purpose for a roster sheave or auxiliary boom point sheave is to: - ans -
Separate the hoist line
When the number of layers of rope on a drum increase the : - ans -Allowable line
pull decreases
What is the minimum allowable distance from the crane and power lines under
50kV? - ans -10'
Eccentric main boom tip reeving casues - ans -twisting of the boom
How many randomly broken wires must there be to remove a running wire rope
from service? - ans -6
When working near power lines when is a signal person required? - ans -When
crane moves within a booms length of power lines
When operating truck cranes what is the most unstable allowable quadrant of
operation? - ans -Side
Tipping capacities of locomotive cranes are based on what % of tipping? - ans -
85%
Should the load be applied when determining the proper boom angle? - ans -YES
, What type of rope is recommended for a tagline around powerlines - ans -
Polypropylene
what does two beeps of the horn indicate to people in the area - ans -forward
Load radius is the distance from the center of gravity of the suspended load to
the: - ans -Center of rotation
What is the purpose of using a boom extension? - ans -Increase height
What do a jib and boom ext. have in common - ans -Increase height
What is the minimum design factor required for a right regular lay main boom or
auxiliary hoist rope?` - ans -3.5
How does the operator determine if the correct load chart is being used? - ans -
Matching serial numbers
If the crane's jib is offset 5 degrees as opposed to an original 15 degrees and the
boom angle remains constant you would expect the load radius to do what? - ans
-To be reduced
How does the operator verify the LMs boom length or load radius reading? - ans -
accutal measurements
If the rated capacity of the crane is above the solid line or within the shaded areas
or has an asterisk next to it this means the capacity is based on: - ans -85% tipping
How many broken wires must be present in one strand of one lay for running wire
rope to be removed from service? - ans -3
In a range diagram boom length and angle can be used to determine: - ans -Load
radius
When making a multiple crane lift it is important for the operator to understand
that - ans -the weight may increase if the other crane lands the load first
NCCER 100 questions And answers, rigging and lifting,
crane safety test, equipment inspection, verified NCCER
answers
When determining the "gross load" the best method is: - ans -Get an accurate
load weight and add the rigging
By order of strength which is correct - ans -Basket, Vertical, Choker
Primary purpose for a roster sheave or auxiliary boom point sheave is to: - ans -
Separate the hoist line
When the number of layers of rope on a drum increase the : - ans -Allowable line
pull decreases
What is the minimum allowable distance from the crane and power lines under
50kV? - ans -10'
Eccentric main boom tip reeving casues - ans -twisting of the boom
How many randomly broken wires must there be to remove a running wire rope
from service? - ans -6
When working near power lines when is a signal person required? - ans -When
crane moves within a booms length of power lines
When operating truck cranes what is the most unstable allowable quadrant of
operation? - ans -Side
Tipping capacities of locomotive cranes are based on what % of tipping? - ans -
85%
Should the load be applied when determining the proper boom angle? - ans -YES
, What type of rope is recommended for a tagline around powerlines - ans -
Polypropylene
what does two beeps of the horn indicate to people in the area - ans -forward
Load radius is the distance from the center of gravity of the suspended load to
the: - ans -Center of rotation
What is the purpose of using a boom extension? - ans -Increase height
What do a jib and boom ext. have in common - ans -Increase height
What is the minimum design factor required for a right regular lay main boom or
auxiliary hoist rope?` - ans -3.5
How does the operator determine if the correct load chart is being used? - ans -
Matching serial numbers
If the crane's jib is offset 5 degrees as opposed to an original 15 degrees and the
boom angle remains constant you would expect the load radius to do what? - ans
-To be reduced
How does the operator verify the LMs boom length or load radius reading? - ans -
accutal measurements
If the rated capacity of the crane is above the solid line or within the shaded areas
or has an asterisk next to it this means the capacity is based on: - ans -85% tipping
How many broken wires must be present in one strand of one lay for running wire
rope to be removed from service? - ans -3
In a range diagram boom length and angle can be used to determine: - ans -Load
radius
When making a multiple crane lift it is important for the operator to understand
that - ans -the weight may increase if the other crane lands the load first
