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MOBILE CRANE NCCER 2025, CRANE OPERATOR EXAM, NCCER
100 QUESTIONS AND ANSWERS, RIGGING AND LIFTING, CRANE
SAFETY TEST, EQUIPMENT INSPECTION, VERIFIED NCCER
ANSWERS
How many broken wires must be present in one strand of one lay for running wire rope to be
removed from service? - ANSWER-3
In a range diagram boom length and angle can be used to determine: - ANSWER-Load radius
When making a multiple crane lift it is important for the operator to understand that - ANSWER-
the weight may increase if the other crane lands the load first
Most crane manufacturers reduce the load capacity for duty-cycle operations because -
ANSWER-side loading forces may occur
The proper way to calibrate a boom angle indicator is: - ANSWER-using a level, raise the boom
to horizontal and set the indicator at 0 degrees
If setting up the crane by a ditch or an excavation, you should stay at least what distance from
the edge? - ANSWER-1 1/2 times the depth of the excavation
When using cable or nylon spreaders it is important to remember : - ANSWER-the lower the
spreader angle the greater the tension
Backward stability is tested with - ANSWER-Basic boom at maximum angle with no load
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If the rated capacity of the crane is below the solid line or outside the shaded area or has an
asterisk next to it this means the capacity is based on - ANSWER-Tipping
Parts of line means - ANSWER-the number of lines running through the load block
If a jib is erected but not being used, it is treated as deduction from the crane's - ANSWER-Gross
capacity
What are most jib capacities based on? - ANSWER-Structural
Jib back lash is how much? - ANSWER-5 degrees
Test loads shell not exceed of manufacturers load ratings of - ANSWER-110%
Crane hooks must not be twisted in excess of - ANSWER-10 degrees-OSHA
5 degrees- ASME
A crane hooks throat opening must not exceed OSHA: - ANSWER-15% of its original size- OSHA
5% of its original size- ASME
Rotation resistant wire rope must not have in excess of: - ANSWER-2 randomly broken wires in
six wire rope diameters or 4 randomly broken wires in 30 wire rope.
A trial lift with unoccupied personnel platform loaded must be: - ANSWER-loaded at least with
the anticipated weight
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How many broke wires in one strand in one lay of a wire rope slings will make it necessary to
replace the sling? - ANSWER-5
What should only be used for a vertical lift? - ANSWER-eyebolt
How is safe working load affected if the lifting hook is loaded off center? - ANSWER-it is
decreased
All domestic wire rope slings have a safety design lifting factor of: - ANSWER-5 to 1
Before a spreader bar or beam can be used, they must be - ANSWER-tested and approaved
Which of the following will cause kinks in a wire rope sling - ANSWER-a load without softeners
Crane hooks must not be twisted in excess of - ANSWER-10 degrees
How many randomly distributed broken wires in one lay of a wire rope sling will make it
necessary to replace the sling - ANSWER-10
You are inspecting a wire rope sling, assume that you have the proper tools to check for wear on
the sling, what are you looking for to remove a wire rope sling from service? - ANSWER-wear of
1/3 the diameter of wire rope
lifting lugs should be used for straight, vertical lifting only - ANSWER-True
Turnbuckles should be made of cast steel and should not be welded - ANSWER-False
MOBILE CRANE NCCER 2025, CRANE OPERATOR EXAM, NCCER
100 QUESTIONS AND ANSWERS, RIGGING AND LIFTING, CRANE
SAFETY TEST, EQUIPMENT INSPECTION, VERIFIED NCCER
ANSWERS
How many broken wires must be present in one strand of one lay for running wire rope to be
removed from service? - ANSWER-3
In a range diagram boom length and angle can be used to determine: - ANSWER-Load radius
When making a multiple crane lift it is important for the operator to understand that - ANSWER-
the weight may increase if the other crane lands the load first
Most crane manufacturers reduce the load capacity for duty-cycle operations because -
ANSWER-side loading forces may occur
The proper way to calibrate a boom angle indicator is: - ANSWER-using a level, raise the boom
to horizontal and set the indicator at 0 degrees
If setting up the crane by a ditch or an excavation, you should stay at least what distance from
the edge? - ANSWER-1 1/2 times the depth of the excavation
When using cable or nylon spreaders it is important to remember : - ANSWER-the lower the
spreader angle the greater the tension
Backward stability is tested with - ANSWER-Basic boom at maximum angle with no load
,2|Page
If the rated capacity of the crane is below the solid line or outside the shaded area or has an
asterisk next to it this means the capacity is based on - ANSWER-Tipping
Parts of line means - ANSWER-the number of lines running through the load block
If a jib is erected but not being used, it is treated as deduction from the crane's - ANSWER-Gross
capacity
What are most jib capacities based on? - ANSWER-Structural
Jib back lash is how much? - ANSWER-5 degrees
Test loads shell not exceed of manufacturers load ratings of - ANSWER-110%
Crane hooks must not be twisted in excess of - ANSWER-10 degrees-OSHA
5 degrees- ASME
A crane hooks throat opening must not exceed OSHA: - ANSWER-15% of its original size- OSHA
5% of its original size- ASME
Rotation resistant wire rope must not have in excess of: - ANSWER-2 randomly broken wires in
six wire rope diameters or 4 randomly broken wires in 30 wire rope.
A trial lift with unoccupied personnel platform loaded must be: - ANSWER-loaded at least with
the anticipated weight
, 3|Page
How many broke wires in one strand in one lay of a wire rope slings will make it necessary to
replace the sling? - ANSWER-5
What should only be used for a vertical lift? - ANSWER-eyebolt
How is safe working load affected if the lifting hook is loaded off center? - ANSWER-it is
decreased
All domestic wire rope slings have a safety design lifting factor of: - ANSWER-5 to 1
Before a spreader bar or beam can be used, they must be - ANSWER-tested and approaved
Which of the following will cause kinks in a wire rope sling - ANSWER-a load without softeners
Crane hooks must not be twisted in excess of - ANSWER-10 degrees
How many randomly distributed broken wires in one lay of a wire rope sling will make it
necessary to replace the sling - ANSWER-10
You are inspecting a wire rope sling, assume that you have the proper tools to check for wear on
the sling, what are you looking for to remove a wire rope sling from service? - ANSWER-wear of
1/3 the diameter of wire rope
lifting lugs should be used for straight, vertical lifting only - ANSWER-True
Turnbuckles should be made of cast steel and should not be welded - ANSWER-False
