NCCCO Core (Crane Operator
Certification Prep) Practice Test
Exam Questions And Correct
Verified Answers (GUARANTEED
PASS) NCCCO Core (Crane
Operator Ce rtification Prep)
Practice Test Exam Questions And
Correct Verified Answers
(GUARANTEED PASS)
Q1. Who has the final authority to decide if a lift is safe to make?
• A) Site Supervisor
• B) Lift Director
• C) Crane Operator
• D) Signal Person
Correct ,,,answer,,,: C) Crane Operator
Rationale: The operator is the last person in the chain of authority and
has the ultimate responsibility to accept or reject any lift .
Q2. What is the main reason for placing mats or cribbing under
outrigger floats?
• A) Raise the tires off the ground
• B) Distribute the force over a larger area
, • C) Allow the float to be level with the surface
• D) Raise the operator's cab for better vision
Correct ,,,answer,,,: B) Distribute the force over a larger area
Rationale: Cribbing and mats prevent outriggers from sinking into soft
ground and ensure proper load distribution to prevent tip-overs .
Q3. On a truck crane with outriggers extended but tires still
touching the ground, which load chart should the operator refer to?
• A) Intermediate chart
• B) Over the front chart
• C) On rubber chart
• D) 85% of on outrigger chart
Correct ,,,answer,,,: C) On rubber chart
Rationale: When tires contact the ground, the crane is considered to be
operating "on rubber" regardless of outrigger position .
Q4. For a rough terrain crane set up on outriggers based on 85%
tipping, the tires should be:
• A) Firmly on the ground
• B) Slightly touching the ground
• C) Off the supporting surface
• D) Chocked front and rear
Correct ,,,answer,,,: C) Off the supporting surface
Rationale: Tires should be completely relieved of the crane's weight
when operating on outriggers to ensure stability calculations are valid .
Q5. A crane must be within what percentage of level for the load
chart to apply?
, • A) 1%
• B) 2%
• C) 3%
• D) 5%
Correct ,,,answer,,,: A) 1%
Rationale: Load charts assume the crane is level within 1%
(approximately 1 foot in 100 feet) .
Q6. Where is the best location for leveling a crane?
• A) Carrier
• B) Upperworks
• C) Cab
• D) Carbody
Correct ,,,answer,,,: B) Upperworks
Rationale: The upperworks (turntable level) is the critical reference
point for crane leveling .
Q7. What effect does blocking up the ends of the tracks have on a
crawler crane?
• A) Decreases capacity over the ends
• B) Increases capacity over the ends
• C) Has no effect on capacity
• D) Decreases capacity over the side
Correct ,,,answer,,,: B) Increases capacity over the ends
Rationale: Blocking the track ends increases the tipping axis distance,
improving stability over the ends .
Q8. What is the tipping axis of a crawler crane?
, • A) Center of rotation to track edge
• B) Tread width centerline
• C) It depends on idler/sprocket offset from track rollers
• D) Centerline of the carbody
Correct ,,,answer,,,: C) It depends on idler/sprocket offset from
track rollers
Rationale: The tipping axis varies based on whether sprockets or idlers
are offset from the track rollers .
Q9. The ground pressure exerted by a crane can approach a weight
equal to:
• A) Only the crane weight
• B) Only the suspended load
• C) The weight of the crane and suspended load combined
• D) 50% of the crane weight
Correct ,,,answer,,,: C) The weight of the crane and suspended load
combined
Rationale: Ground pressure calculations must account for total weight
of the crane plus lifted load .
Q10. Setting up a mobile crane with a long boom on uneven ground,
what support condition should be considered?
• A) Keeping it 90° between cylinder rod and pad
• B) Extending outriggers unevenly
• C) Using only one outrigger
• D) Removing all outriggers
Certification Prep) Practice Test
Exam Questions And Correct
Verified Answers (GUARANTEED
PASS) NCCCO Core (Crane
Operator Ce rtification Prep)
Practice Test Exam Questions And
Correct Verified Answers
(GUARANTEED PASS)
Q1. Who has the final authority to decide if a lift is safe to make?
• A) Site Supervisor
• B) Lift Director
• C) Crane Operator
• D) Signal Person
Correct ,,,answer,,,: C) Crane Operator
Rationale: The operator is the last person in the chain of authority and
has the ultimate responsibility to accept or reject any lift .
Q2. What is the main reason for placing mats or cribbing under
outrigger floats?
• A) Raise the tires off the ground
• B) Distribute the force over a larger area
, • C) Allow the float to be level with the surface
• D) Raise the operator's cab for better vision
Correct ,,,answer,,,: B) Distribute the force over a larger area
Rationale: Cribbing and mats prevent outriggers from sinking into soft
ground and ensure proper load distribution to prevent tip-overs .
Q3. On a truck crane with outriggers extended but tires still
touching the ground, which load chart should the operator refer to?
• A) Intermediate chart
• B) Over the front chart
• C) On rubber chart
• D) 85% of on outrigger chart
Correct ,,,answer,,,: C) On rubber chart
Rationale: When tires contact the ground, the crane is considered to be
operating "on rubber" regardless of outrigger position .
Q4. For a rough terrain crane set up on outriggers based on 85%
tipping, the tires should be:
• A) Firmly on the ground
• B) Slightly touching the ground
• C) Off the supporting surface
• D) Chocked front and rear
Correct ,,,answer,,,: C) Off the supporting surface
Rationale: Tires should be completely relieved of the crane's weight
when operating on outriggers to ensure stability calculations are valid .
Q5. A crane must be within what percentage of level for the load
chart to apply?
, • A) 1%
• B) 2%
• C) 3%
• D) 5%
Correct ,,,answer,,,: A) 1%
Rationale: Load charts assume the crane is level within 1%
(approximately 1 foot in 100 feet) .
Q6. Where is the best location for leveling a crane?
• A) Carrier
• B) Upperworks
• C) Cab
• D) Carbody
Correct ,,,answer,,,: B) Upperworks
Rationale: The upperworks (turntable level) is the critical reference
point for crane leveling .
Q7. What effect does blocking up the ends of the tracks have on a
crawler crane?
• A) Decreases capacity over the ends
• B) Increases capacity over the ends
• C) Has no effect on capacity
• D) Decreases capacity over the side
Correct ,,,answer,,,: B) Increases capacity over the ends
Rationale: Blocking the track ends increases the tipping axis distance,
improving stability over the ends .
Q8. What is the tipping axis of a crawler crane?
, • A) Center of rotation to track edge
• B) Tread width centerline
• C) It depends on idler/sprocket offset from track rollers
• D) Centerline of the carbody
Correct ,,,answer,,,: C) It depends on idler/sprocket offset from
track rollers
Rationale: The tipping axis varies based on whether sprockets or idlers
are offset from the track rollers .
Q9. The ground pressure exerted by a crane can approach a weight
equal to:
• A) Only the crane weight
• B) Only the suspended load
• C) The weight of the crane and suspended load combined
• D) 50% of the crane weight
Correct ,,,answer,,,: C) The weight of the crane and suspended load
combined
Rationale: Ground pressure calculations must account for total weight
of the crane plus lifted load .
Q10. Setting up a mobile crane with a long boom on uneven ground,
what support condition should be considered?
• A) Keeping it 90° between cylinder rod and pad
• B) Extending outriggers unevenly
• C) Using only one outrigger
• D) Removing all outriggers
