NCCCO CORE EXAM (2026)
UPDATE Verified Questions and
Answers | Latest Already Graded
A+ UPDATE |2026
Course
NCCCO CORE
1. Which four domains make up the NCCCO Mobile Crane Operator Core examination?
A. Rigging, signaling, welding, inspection
B. Site, Operations, Technical Knowledge, Load Charts
C. Safety, hydraulics, engines, rigging
D. Setup, maintenance, driving, inspection
Answer: B
Rationale: The published Core outline divides the examination into Site, Operations, Technical
Knowledge, and Load Charts.
2. Which condition can significantly reduce ground stability?
A. Firm, properly prepared ground
B. Underground voids
C. Adequate cribbing
D. Properly compacted fill
Answer: B
Rationale: Underground voids, tanks, loose fill, and similar subsurface conditions can
compromise crane support. Ground stability is specifically tested under the Site domain.
3. What is the purpose of mats or blocking/cribbing beneath crane supports?
A. Increase boom length
B. Distribute support loads and provide appropriate bearing support
C. Increase engine speed
D. Increase rated capacity automatically
Answer: B
,Rationale: Properly selected supporting materials can distribute loads over an adequate area
and help maintain stability. They do not automatically increase the crane's rated capacity.
4. A crane is being set up near an excavation. What should the operator consider?
A. Only the crane's fuel level
B. The excavation's effect on ground support and stability
C. The color of the soil
D. The operator's preferred boom position
Answer: B
Rationale: Excavations, slopes, retaining walls, and depressions are specifically identified as
surface conditions that can affect ground stability.
5. Why is an underground tank near a crane setup location hazardous?
A. It increases radio interference
B. It may reduce the ground's ability to support crane loads
C. It increases the crane's rated capacity
D. It automatically requires a longer boom
Answer: B
Rationale: Subsurface structures can create unsupported areas or weak zones beneath crane
supports.
6. What should be considered before traveling a mobile crane without a load?
A. Route conditions, clearances, stability, and applicable travel requirements
B. Only fuel consumption
C. Only the color of the load line
D. The number of workers in the office
Answer: A
Rationale: The Core outline specifically includes requirements for traveling without a load and
hazards involving access and in-transit clearances.
,7. Which situation presents a pinch/crush hazard?
A. A worker positioned between a moving crane component and a fixed structure
B. A worker standing in a designated safe area
C. An operator seated in the cab
D. An empty work area
Answer: A
Rationale: Workers can be seriously injured when caught between moving equipment and
stationary objects.
8. Who has responsibilities concerning site conditions?
A. Only the crane operator
B. The controlling entity has specified responsibilities concerning site conditions
C. Only the signalperson
D. Only the equipment manufacturer
Answer: B
Rationale: NCCCO's Core outline specifically requires knowledge of the responsibilities of the
controlling entity concerning site conditions.
9. Before lifting, which load information should be verified?
A. Weight, dimensions, and center of gravity
B. Paint color and manufacturer logo only
C. Delivery driver's name only
D. Date of purchase only
Answer: A
Rationale: Accurate load weight, dimensions, and center of gravity are essential for determining
safe lifting conditions and appropriate crane configuration.
10. Why must the crane's radius be determined accurately?
A. Radius is a factor in determining allowable crane capacity
B. Radius only determines engine temperature
, C. Radius has no effect on lifting capacity
D. Radius determines the operator's certification
Answer: A
Rationale: Crane capacity changes with operating radius. The actual radius must correspond
with the appropriate manufacturer's load-chart information.
11. What should be done if a crane inspection identifies an unsafe condition?
A. Ignore it if the crane can still move
B. Follow applicable procedures for correcting or addressing the unsafe condition before
operation
C. Increase the load slowly
D. Disable the inspection system
Answer: B
Rationale: Pre-operation inspection is intended to identify unsafe conditions before they result
in an incident. Inspection of unsafe conditions is explicitly part of the Operations domain.
12. What is the purpose of properly leveling a crane?
A. Maintain the intended operating geometry and stability
B. Increase the engine horsepower
C. Reduce the load's weight
D. Eliminate the need for a load chart
Answer: A
Rationale: Proper leveling is an important part of safe setup and helps the crane operate within
the conditions assumed by the manufacturer.
13. Which is an important hazard associated with overhead power lines?
A. Electrical contact or arcing
B. Increased tire wear only
C. Reduced hydraulic pressure
D. Loss of paint adhesion
Answer: A
UPDATE Verified Questions and
Answers | Latest Already Graded
A+ UPDATE |2026
Course
NCCCO CORE
1. Which four domains make up the NCCCO Mobile Crane Operator Core examination?
A. Rigging, signaling, welding, inspection
B. Site, Operations, Technical Knowledge, Load Charts
C. Safety, hydraulics, engines, rigging
D. Setup, maintenance, driving, inspection
Answer: B
Rationale: The published Core outline divides the examination into Site, Operations, Technical
Knowledge, and Load Charts.
2. Which condition can significantly reduce ground stability?
A. Firm, properly prepared ground
B. Underground voids
C. Adequate cribbing
D. Properly compacted fill
Answer: B
Rationale: Underground voids, tanks, loose fill, and similar subsurface conditions can
compromise crane support. Ground stability is specifically tested under the Site domain.
3. What is the purpose of mats or blocking/cribbing beneath crane supports?
A. Increase boom length
B. Distribute support loads and provide appropriate bearing support
C. Increase engine speed
D. Increase rated capacity automatically
Answer: B
,Rationale: Properly selected supporting materials can distribute loads over an adequate area
and help maintain stability. They do not automatically increase the crane's rated capacity.
4. A crane is being set up near an excavation. What should the operator consider?
A. Only the crane's fuel level
B. The excavation's effect on ground support and stability
C. The color of the soil
D. The operator's preferred boom position
Answer: B
Rationale: Excavations, slopes, retaining walls, and depressions are specifically identified as
surface conditions that can affect ground stability.
5. Why is an underground tank near a crane setup location hazardous?
A. It increases radio interference
B. It may reduce the ground's ability to support crane loads
C. It increases the crane's rated capacity
D. It automatically requires a longer boom
Answer: B
Rationale: Subsurface structures can create unsupported areas or weak zones beneath crane
supports.
6. What should be considered before traveling a mobile crane without a load?
A. Route conditions, clearances, stability, and applicable travel requirements
B. Only fuel consumption
C. Only the color of the load line
D. The number of workers in the office
Answer: A
Rationale: The Core outline specifically includes requirements for traveling without a load and
hazards involving access and in-transit clearances.
,7. Which situation presents a pinch/crush hazard?
A. A worker positioned between a moving crane component and a fixed structure
B. A worker standing in a designated safe area
C. An operator seated in the cab
D. An empty work area
Answer: A
Rationale: Workers can be seriously injured when caught between moving equipment and
stationary objects.
8. Who has responsibilities concerning site conditions?
A. Only the crane operator
B. The controlling entity has specified responsibilities concerning site conditions
C. Only the signalperson
D. Only the equipment manufacturer
Answer: B
Rationale: NCCCO's Core outline specifically requires knowledge of the responsibilities of the
controlling entity concerning site conditions.
9. Before lifting, which load information should be verified?
A. Weight, dimensions, and center of gravity
B. Paint color and manufacturer logo only
C. Delivery driver's name only
D. Date of purchase only
Answer: A
Rationale: Accurate load weight, dimensions, and center of gravity are essential for determining
safe lifting conditions and appropriate crane configuration.
10. Why must the crane's radius be determined accurately?
A. Radius is a factor in determining allowable crane capacity
B. Radius only determines engine temperature
, C. Radius has no effect on lifting capacity
D. Radius determines the operator's certification
Answer: A
Rationale: Crane capacity changes with operating radius. The actual radius must correspond
with the appropriate manufacturer's load-chart information.
11. What should be done if a crane inspection identifies an unsafe condition?
A. Ignore it if the crane can still move
B. Follow applicable procedures for correcting or addressing the unsafe condition before
operation
C. Increase the load slowly
D. Disable the inspection system
Answer: B
Rationale: Pre-operation inspection is intended to identify unsafe conditions before they result
in an incident. Inspection of unsafe conditions is explicitly part of the Operations domain.
12. What is the purpose of properly leveling a crane?
A. Maintain the intended operating geometry and stability
B. Increase the engine horsepower
C. Reduce the load's weight
D. Eliminate the need for a load chart
Answer: A
Rationale: Proper leveling is an important part of safe setup and helps the crane operate within
the conditions assumed by the manufacturer.
13. Which is an important hazard associated with overhead power lines?
A. Electrical contact or arcing
B. Increased tire wear only
C. Reduced hydraulic pressure
D. Loss of paint adhesion
Answer: A
