NCCCO Mobile Crane Exam Questions and
answers| fall 2026/27 Latest
NCCCO Mobile Crane Core Exam Practice Test
cx cx cx cx cx cx
1. What is the minimum distance that a crane boom or load must maintain from a 50kV p
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
ower line? cx
A) 5 feet
cx cx
B) 10 feet
cx cx
C) 15 feet
cx cx
D) 20 feet
cx cx
**2. The Rated Capacity Chart for a lattice boom crane is based on the crane being:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Perfectly level
cx cx
B) On firm ground
cx cx cx
C) Outriggers fully extended
cx cx cx
D) All of the above
cx cx cx cx
3. What is the primary purpose of a boom angle indicator?
cx cx cx cx cx cx cx cx cx cx
A) To show the radius of the load
cx cx cx cx cx cx cx
B) To show the length of the boom
cx cx cx cx cx cx cx
C) To show the angle of the boom in relation to the ground
cx cx cx cx cx cx cx cx cx cx cx cx
D) To show the weight of the load
cx cx cx cx cx cx cx
**4. If the load radius increases, the crane's lifting capacity generally:
cx cx cx cx cx cx cx cx cx cx
A) Increases
cx
B) Decreases
cx
C) Stays the same
cx cx cx
D) Doubles
cx
5. What does an Anti-Two-Block (A2B) device prevent?
cx cx cx cx cx cx cx
A) The boom from extending too far
cx cx cx cx cx cx
B) The load from swinging
cx cx cx cx
C) The load block from contacting the boom tip
cx cx cx cx cx cx cx cx
D) The crane from tipping over
cx cx cx cx cx
**6. Before lifting a load, the operator should test the crane's hoist and swing brakes by:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Engaging the emergency stop
cx cx cx cx
B) Raising the load a few inches off the ground
cx cx cx cx cx cx cx cx cx
C) Fully extending the boom horizontally
cx cx cx cx cx
D) Checking the hydraulic fluid level
cx cx cx cx cx
,7. What is the minimum number of full wraps of wire rope required to remain on a drum
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
during hoisting operations? cx cx
A) One
cx
B) Two
cx
C) Three
cx
D) Five
cx
**8. When a crane is equipped with outriggers, they must be:
cx cx cx cx cx cx cx cx cx cx
A) Extended only if the load is heavy
cx cx cx cx cx cx cx
B) Set on cribbing or pads to distribute the load
cx cx cx cx cx cx cx cx cx
C) Extended equally on all sides
cx cx cx cx cx
D) Set on the softest ground available
cx cx cx cx cx cx
**9. The load chart states the crane can lift 20,000 lbs at a 20-foot radius. This capacity is for a:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Tipping load
cx cx
B) Structural load
cx cx
C) Net capacity
cx cx
D) Gross capacity
cx cx
10. What is the correct hand signal for "Dog Everything" (Stop)?
cx cx cx cx cx cx cx cx cx cx
A) One hand raised with a closed fist
cx cx cx cx cx cx cx
B) Both hands clasped above the head
cx cx cx cx cx cx
C) One hand extended, palm down, moving side to side
cx cx cx cx cx cx cx cx cx
D) Arms crossed below the waist, palms facing inward
cx cx cx cx cx cx cx cx
**11. A crane's tipping axis is the line about which the crane will tip. For a crawler crane, this line r
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
uns through:
cx
A) The center of the cab
cx cx cx cx cx
B) The center of the tracks
cx cx cx cx cx
C) The outside edge of the tracks
cx cx cx cx cx cx
D) The center pin of the boom
cx cx cx cx cx cx
**12. The term "Dedrick" refers to a type of:
cx cx cx cx cx cx cx cx
A) Crane attachment
cx cx
B) Load chart calculation
cx cx cx
C) Wire rope clip
cx cx cx
D) Rigging hardware
cx cx
13. According to OSHA, who is responsible for determining the weight of the load and rig
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
ging?
A) The crane operator
cx cx cx
B) The signal person
cx cx cx
C) The competent person or lift director
cx cx cx cx cx cx
D) The rigger
cx cx
,**14. If a load has a center of gravity not directly under the hook, the load will:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Be easier to lift
cx cx cx cx
B) Tilt or swing upon lifting
cx cx cx cx cx
C) Increase the crane's capacity
cx cx cx cx
D) Decrease the boom angle
cx cx cx cx
15. What is the primary function of a jib on a crane?
cx cx cx cx cx cx cx cx cx cx cx
A) To increase the crane's lifting capacity
cx cx cx cx cx cx
B) To provide additional reach and height
cx cx cx cx cx cx
C) To stabilize the crane during a lift
cx cx cx cx cx cx cx
D) To reduce the boom angle
cx cx cx cx cx
**16. When using a hammerhead or telescopic boom crane, the load radius is measured from the
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
:
A) Center of rotation of the crane
cx cx cx cx cx cx
B) Center of the load
cx cx cx cx
C) Boom tip sheave
cx cx cx
D) Outrigger float
cx cx
17. What is the effect of "side loading" on a crane boom?
cx cx cx cx cx cx cx cx cx cx cx
A) It is the most efficient way to lift a load
cx cx cx cx cx cx cx cx cx cx
B) It increases the crane's capacity
cx cx cx cx cx
C) It can cause structural damage or failure
cx cx cx cx cx cx cx
D) It is permissible if the load is less than 50% capacity
cx cx cx cx cx cx cx cx cx cx cx
**18. The Rated Capacity Limiter (RCL) or Load Moment Indicator (LMI) is designed to:
cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Automatically lift the load for the operator
cx cx cx cx cx cx cx
B) Warn the operator and/or cut off functions when capacity is exceeded
cx cx cx cx cx cx cx cx cx cx cx
C) Replace the need for a load chart
cx cx cx cx cx cx cx
D) Calculate the wind speed
cx cx cx cx
**19. A "critical lift" is generally defined as a lift that:
cx cx cx cx cx cx cx cx cx cx
A) Exceeds 50% of the crane's capacity
cx cx cx cx cx cx
B) Requires the use of two cranes
cx cx cx cx cx cx
C) Poses an unusual hazard or exceeds a designated weight threshold
cx cx cx cx cx cx cx cx cx cx
D) Is performed in the rain
cx cx cx cx cx
**20. When a load is hoisted, the operator must ensure the load is:
cx cx cx cx cx cx cx cx cx cx cx cx
A) Free of all rigging
cx cx cx cx
B) Balanced and properly secured
cx cx cx cx
C) As high as possible to clear obstacles
cx cx cx cx cx cx cx
D) Swinging freely to test the brakes
cx cx cx cx cx cx
, 21. What does the term "Block" refer to in crane operations?
cx cx cx cx cx cx cx cx cx cx
A) The wooden pads under outriggers
cx cx cx cx cx
B) The sheave assembly (hook block or headache ball)
cx cx cx cx cx cx cx cx
C) The main engine
cx cx cx
D) The brake system
cx cx cx
**22. The service brake on a mobile crane is used to:
cx cx cx cx cx cx cx cx cx cx
A) Stop the crane's travel
cx cx cx cx
B) Stop the hoist drum
cx cx cx cx
C) Stop the swing function
cx cx cx cx
D) Hold the load in position
cx cx cx cx cx
23. According to ASME B30.5, how often should a crane be inspected for operational func
cx cx cx cx cx cx cx cx cx cx cx cx cx cx
tions?
A) Monthly
cx
B) Annually
cx
C) At the beginning of each shift
cx cx cx cx cx cx
D) Weekly
cx
**24. When the wind speed exceeds the manufacturer's recommendation, the operator should:
cx cx cx cx cx cx cx cx cx cx cx
A) Continue lifting but at a slower speed
cx cx cx cx cx cx cx
B) Use a larger crane
cx cx cx cx
C) Reduce the load by 50%
cx cx cx cx cx
D) Cease crane operations
cx cx cx
25. What does the acronym "SWL" stand for?
cx cx cx cx cx cx cx
A) Standard Working Load
cx cx cx
B) Safe Working Load
cx cx cx
C) Safe Winch Limit
cx cx cx
D) Structural Weight Limit
cx cx cx
26. What is the proper sequence for extending outriggers?
cx cx cx cx cx cx cx cx
A) Lower, extend, and level
cx cx cx cx
B) Level, extend, and lower
cx cx cx cx
C) Extend, level, and lower
cx cx cx cx
D) Extend, lower, and level
cx cx cx cx
**27. The purpose of a boom stop (or boom kick-out) is to prevent the boom from:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Extending too far
cx cx cx
B) Being lowered past a safe minimum angle
cx cx cx cx cx cx cx
C) Rotating too fast
cx cx cx
D) Being raised past a safe maximum angle
cx cx cx cx cx cx cx
answers| fall 2026/27 Latest
NCCCO Mobile Crane Core Exam Practice Test
cx cx cx cx cx cx
1. What is the minimum distance that a crane boom or load must maintain from a 50kV p
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
ower line? cx
A) 5 feet
cx cx
B) 10 feet
cx cx
C) 15 feet
cx cx
D) 20 feet
cx cx
**2. The Rated Capacity Chart for a lattice boom crane is based on the crane being:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Perfectly level
cx cx
B) On firm ground
cx cx cx
C) Outriggers fully extended
cx cx cx
D) All of the above
cx cx cx cx
3. What is the primary purpose of a boom angle indicator?
cx cx cx cx cx cx cx cx cx cx
A) To show the radius of the load
cx cx cx cx cx cx cx
B) To show the length of the boom
cx cx cx cx cx cx cx
C) To show the angle of the boom in relation to the ground
cx cx cx cx cx cx cx cx cx cx cx cx
D) To show the weight of the load
cx cx cx cx cx cx cx
**4. If the load radius increases, the crane's lifting capacity generally:
cx cx cx cx cx cx cx cx cx cx
A) Increases
cx
B) Decreases
cx
C) Stays the same
cx cx cx
D) Doubles
cx
5. What does an Anti-Two-Block (A2B) device prevent?
cx cx cx cx cx cx cx
A) The boom from extending too far
cx cx cx cx cx cx
B) The load from swinging
cx cx cx cx
C) The load block from contacting the boom tip
cx cx cx cx cx cx cx cx
D) The crane from tipping over
cx cx cx cx cx
**6. Before lifting a load, the operator should test the crane's hoist and swing brakes by:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Engaging the emergency stop
cx cx cx cx
B) Raising the load a few inches off the ground
cx cx cx cx cx cx cx cx cx
C) Fully extending the boom horizontally
cx cx cx cx cx
D) Checking the hydraulic fluid level
cx cx cx cx cx
,7. What is the minimum number of full wraps of wire rope required to remain on a drum
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
during hoisting operations? cx cx
A) One
cx
B) Two
cx
C) Three
cx
D) Five
cx
**8. When a crane is equipped with outriggers, they must be:
cx cx cx cx cx cx cx cx cx cx
A) Extended only if the load is heavy
cx cx cx cx cx cx cx
B) Set on cribbing or pads to distribute the load
cx cx cx cx cx cx cx cx cx
C) Extended equally on all sides
cx cx cx cx cx
D) Set on the softest ground available
cx cx cx cx cx cx
**9. The load chart states the crane can lift 20,000 lbs at a 20-foot radius. This capacity is for a:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Tipping load
cx cx
B) Structural load
cx cx
C) Net capacity
cx cx
D) Gross capacity
cx cx
10. What is the correct hand signal for "Dog Everything" (Stop)?
cx cx cx cx cx cx cx cx cx cx
A) One hand raised with a closed fist
cx cx cx cx cx cx cx
B) Both hands clasped above the head
cx cx cx cx cx cx
C) One hand extended, palm down, moving side to side
cx cx cx cx cx cx cx cx cx
D) Arms crossed below the waist, palms facing inward
cx cx cx cx cx cx cx cx
**11. A crane's tipping axis is the line about which the crane will tip. For a crawler crane, this line r
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
uns through:
cx
A) The center of the cab
cx cx cx cx cx
B) The center of the tracks
cx cx cx cx cx
C) The outside edge of the tracks
cx cx cx cx cx cx
D) The center pin of the boom
cx cx cx cx cx cx
**12. The term "Dedrick" refers to a type of:
cx cx cx cx cx cx cx cx
A) Crane attachment
cx cx
B) Load chart calculation
cx cx cx
C) Wire rope clip
cx cx cx
D) Rigging hardware
cx cx
13. According to OSHA, who is responsible for determining the weight of the load and rig
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
ging?
A) The crane operator
cx cx cx
B) The signal person
cx cx cx
C) The competent person or lift director
cx cx cx cx cx cx
D) The rigger
cx cx
,**14. If a load has a center of gravity not directly under the hook, the load will:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Be easier to lift
cx cx cx cx
B) Tilt or swing upon lifting
cx cx cx cx cx
C) Increase the crane's capacity
cx cx cx cx
D) Decrease the boom angle
cx cx cx cx
15. What is the primary function of a jib on a crane?
cx cx cx cx cx cx cx cx cx cx cx
A) To increase the crane's lifting capacity
cx cx cx cx cx cx
B) To provide additional reach and height
cx cx cx cx cx cx
C) To stabilize the crane during a lift
cx cx cx cx cx cx cx
D) To reduce the boom angle
cx cx cx cx cx
**16. When using a hammerhead or telescopic boom crane, the load radius is measured from the
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
:
A) Center of rotation of the crane
cx cx cx cx cx cx
B) Center of the load
cx cx cx cx
C) Boom tip sheave
cx cx cx
D) Outrigger float
cx cx
17. What is the effect of "side loading" on a crane boom?
cx cx cx cx cx cx cx cx cx cx cx
A) It is the most efficient way to lift a load
cx cx cx cx cx cx cx cx cx cx
B) It increases the crane's capacity
cx cx cx cx cx
C) It can cause structural damage or failure
cx cx cx cx cx cx cx
D) It is permissible if the load is less than 50% capacity
cx cx cx cx cx cx cx cx cx cx cx
**18. The Rated Capacity Limiter (RCL) or Load Moment Indicator (LMI) is designed to:
cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Automatically lift the load for the operator
cx cx cx cx cx cx cx
B) Warn the operator and/or cut off functions when capacity is exceeded
cx cx cx cx cx cx cx cx cx cx cx
C) Replace the need for a load chart
cx cx cx cx cx cx cx
D) Calculate the wind speed
cx cx cx cx
**19. A "critical lift" is generally defined as a lift that:
cx cx cx cx cx cx cx cx cx cx
A) Exceeds 50% of the crane's capacity
cx cx cx cx cx cx
B) Requires the use of two cranes
cx cx cx cx cx cx
C) Poses an unusual hazard or exceeds a designated weight threshold
cx cx cx cx cx cx cx cx cx cx
D) Is performed in the rain
cx cx cx cx cx
**20. When a load is hoisted, the operator must ensure the load is:
cx cx cx cx cx cx cx cx cx cx cx cx
A) Free of all rigging
cx cx cx cx
B) Balanced and properly secured
cx cx cx cx
C) As high as possible to clear obstacles
cx cx cx cx cx cx cx
D) Swinging freely to test the brakes
cx cx cx cx cx cx
, 21. What does the term "Block" refer to in crane operations?
cx cx cx cx cx cx cx cx cx cx
A) The wooden pads under outriggers
cx cx cx cx cx
B) The sheave assembly (hook block or headache ball)
cx cx cx cx cx cx cx cx
C) The main engine
cx cx cx
D) The brake system
cx cx cx
**22. The service brake on a mobile crane is used to:
cx cx cx cx cx cx cx cx cx cx
A) Stop the crane's travel
cx cx cx cx
B) Stop the hoist drum
cx cx cx cx
C) Stop the swing function
cx cx cx cx
D) Hold the load in position
cx cx cx cx cx
23. According to ASME B30.5, how often should a crane be inspected for operational func
cx cx cx cx cx cx cx cx cx cx cx cx cx cx
tions?
A) Monthly
cx
B) Annually
cx
C) At the beginning of each shift
cx cx cx cx cx cx
D) Weekly
cx
**24. When the wind speed exceeds the manufacturer's recommendation, the operator should:
cx cx cx cx cx cx cx cx cx cx cx
A) Continue lifting but at a slower speed
cx cx cx cx cx cx cx
B) Use a larger crane
cx cx cx cx
C) Reduce the load by 50%
cx cx cx cx cx
D) Cease crane operations
cx cx cx
25. What does the acronym "SWL" stand for?
cx cx cx cx cx cx cx
A) Standard Working Load
cx cx cx
B) Safe Working Load
cx cx cx
C) Safe Winch Limit
cx cx cx
D) Structural Weight Limit
cx cx cx
26. What is the proper sequence for extending outriggers?
cx cx cx cx cx cx cx cx
A) Lower, extend, and level
cx cx cx cx
B) Level, extend, and lower
cx cx cx cx
C) Extend, level, and lower
cx cx cx cx
D) Extend, lower, and level
cx cx cx cx
**27. The purpose of a boom stop (or boom kick-out) is to prevent the boom from:
cx cx cx cx cx cx cx cx cx cx cx cx cx cx cx
A) Extending too far
cx cx cx
B) Being lowered past a safe minimum angle
cx cx cx cx cx cx cx
C) Rotating too fast
cx cx cx
D) Being raised past a safe maximum angle
cx cx cx cx cx cx cx
