NCCCO MOBILE CRANE OPERATOR CERTIFICATION EXAM
READY | VERIFIED QUESTIONS AND ANSWERS |
COMPREHENSIVE LATEST VERSION 2026/2027
1. What is the primary purpose of a load chart?
A. To determine fuel consumption
B. To identify the maximum load a crane can lift at various radii and boom
angles
C. To schedule maintenance intervals
D. To calculate travel speed
Answer: B
2. Before beginning any lift, the operator must:
A. Notify the nearest hospital
B. Complete a pre-operational inspection and review the load chart
C. Obtain a commercial driver's license
D. Install outriggers regardless of terrain
Answer: B
3. What does the term 'rated capacity' mean?
A. The weight of the crane itself
B. The maximum load the crane is approved to lift under specific conditions
C. The speed at which the crane can travel
D. The fuel tank capacity
Answer: B
4. The load radius is measured from:
A. The tip of the boom to the load
B. The center of rotation to the center of the load
C. The ground to the hook block
D. The front axle to the rear axle
, Answer: B
5. What is the minimum safe distance from energized power lines for cranes
operating near voltages up to 350 kV?
A. 5 feet
B. 10 feet
C. 20 feet
D. 50 feet
Answer: C
6. Who is responsible for ensuring that a crane is not overloaded?
A. The rigger only
B. The signal person only
C. The operator
D. The site superintendent only
Answer: C
7. What action should an operator take if a load chart rating is unclear?
A. Estimate and proceed
B. Use the highest available rating
C. Stop the operation and consult the manufacturer
D. Ask a nearby worker
Answer: C
8. What is the purpose of outriggers on a mobile crane?
A. To increase travel speed
B. To provide additional stability during lifting operations
C. To reduce fuel consumption
D. To anchor the crane to the ground permanently
Answer: B
9. A crane's anti-two-block device is designed to:
A. Prevent the crane from traveling while loaded
B. Stop hoisting when the hook block approaches the boom tip
C. Prevent the crane from rotating
D. Limit travel speed on slopes
Answer: B
,10. What does 'tipping load' refer to?
A. The weight of the counterweight
B. The load at which the crane will tip over
C. The rated load at maximum radius
D. The weight of the hook and rigging
Answer: B
11. When is a crane considered to be operating 'on rubber'?
A. When the crane has rubber-coated outrigger pads
B. When the crane is lifting with outriggers retracted on its tires
C. When the crane has foam-filled tires
D. When traveling over rubber mats
Answer: B
12. The boom angle indicator tells the operator:
A. Wind speed at the boom tip
B. The angle of the boom from horizontal
C. The weight of the load
D. The fuel level
Answer: B
13. A load line is considered to be plumb when:
A. It is horizontal
B. It hangs vertically below the boom tip
C. It is attached to the hook block
D. It has been inspected
Answer: B
14. What is the function of the load moment indicator (LMI)?
A. To measure wind speed
B. To display current load moment versus rated capacity
C. To indicate fuel level
D. To calculate travel time
Answer: B
15. Cribbing under outrigger pads is used to:
A. Prevent rust on outrigger beams
, B. Distribute load over a larger ground bearing area
C. Increase boom length
D. Reduce vibration during operation
Answer: B
16. What does a 'de-rating' of a crane mean?
A. Increasing the crane's rated capacity
B. Reducing the crane's rated capacity due to specific conditions
C. Retiring the crane from service
D. Upgrading crane electronics
Answer: B
17. Which document must always be in the crane cab during operation?
A. Operator's personal identification
B. The crane's load charts and operating manual
C. The project blueprints
D. OSHA inspection records
Answer: B
18. What is a tagline used for?
A. To secure the crane to the ground
B. To control load swing and rotation
C. To extend the boom length
D. To connect the hoist line
Answer: B
19. The term 'two-blocking' means:
A. Using two outrigger blocks
B. The hook block contacts the boom tip sheave
C. Stacking two cribbing blocks
D. Running two hoist lines simultaneously
Answer: B
20. Before lifting a load, the operator should perform a:
A. Full operational lift immediately
B. Trial lift to check rigging and load balance
C. Fuel check only
READY | VERIFIED QUESTIONS AND ANSWERS |
COMPREHENSIVE LATEST VERSION 2026/2027
1. What is the primary purpose of a load chart?
A. To determine fuel consumption
B. To identify the maximum load a crane can lift at various radii and boom
angles
C. To schedule maintenance intervals
D. To calculate travel speed
Answer: B
2. Before beginning any lift, the operator must:
A. Notify the nearest hospital
B. Complete a pre-operational inspection and review the load chart
C. Obtain a commercial driver's license
D. Install outriggers regardless of terrain
Answer: B
3. What does the term 'rated capacity' mean?
A. The weight of the crane itself
B. The maximum load the crane is approved to lift under specific conditions
C. The speed at which the crane can travel
D. The fuel tank capacity
Answer: B
4. The load radius is measured from:
A. The tip of the boom to the load
B. The center of rotation to the center of the load
C. The ground to the hook block
D. The front axle to the rear axle
, Answer: B
5. What is the minimum safe distance from energized power lines for cranes
operating near voltages up to 350 kV?
A. 5 feet
B. 10 feet
C. 20 feet
D. 50 feet
Answer: C
6. Who is responsible for ensuring that a crane is not overloaded?
A. The rigger only
B. The signal person only
C. The operator
D. The site superintendent only
Answer: C
7. What action should an operator take if a load chart rating is unclear?
A. Estimate and proceed
B. Use the highest available rating
C. Stop the operation and consult the manufacturer
D. Ask a nearby worker
Answer: C
8. What is the purpose of outriggers on a mobile crane?
A. To increase travel speed
B. To provide additional stability during lifting operations
C. To reduce fuel consumption
D. To anchor the crane to the ground permanently
Answer: B
9. A crane's anti-two-block device is designed to:
A. Prevent the crane from traveling while loaded
B. Stop hoisting when the hook block approaches the boom tip
C. Prevent the crane from rotating
D. Limit travel speed on slopes
Answer: B
,10. What does 'tipping load' refer to?
A. The weight of the counterweight
B. The load at which the crane will tip over
C. The rated load at maximum radius
D. The weight of the hook and rigging
Answer: B
11. When is a crane considered to be operating 'on rubber'?
A. When the crane has rubber-coated outrigger pads
B. When the crane is lifting with outriggers retracted on its tires
C. When the crane has foam-filled tires
D. When traveling over rubber mats
Answer: B
12. The boom angle indicator tells the operator:
A. Wind speed at the boom tip
B. The angle of the boom from horizontal
C. The weight of the load
D. The fuel level
Answer: B
13. A load line is considered to be plumb when:
A. It is horizontal
B. It hangs vertically below the boom tip
C. It is attached to the hook block
D. It has been inspected
Answer: B
14. What is the function of the load moment indicator (LMI)?
A. To measure wind speed
B. To display current load moment versus rated capacity
C. To indicate fuel level
D. To calculate travel time
Answer: B
15. Cribbing under outrigger pads is used to:
A. Prevent rust on outrigger beams
, B. Distribute load over a larger ground bearing area
C. Increase boom length
D. Reduce vibration during operation
Answer: B
16. What does a 'de-rating' of a crane mean?
A. Increasing the crane's rated capacity
B. Reducing the crane's rated capacity due to specific conditions
C. Retiring the crane from service
D. Upgrading crane electronics
Answer: B
17. Which document must always be in the crane cab during operation?
A. Operator's personal identification
B. The crane's load charts and operating manual
C. The project blueprints
D. OSHA inspection records
Answer: B
18. What is a tagline used for?
A. To secure the crane to the ground
B. To control load swing and rotation
C. To extend the boom length
D. To connect the hoist line
Answer: B
19. The term 'two-blocking' means:
A. Using two outrigger blocks
B. The hook block contacts the boom tip sheave
C. Stacking two cribbing blocks
D. Running two hoist lines simultaneously
Answer: B
20. Before lifting a load, the operator should perform a:
A. Full operational lift immediately
B. Trial lift to check rigging and load balance
C. Fuel check only
