NCCCO ACTUAL EXAM 1 QUESTIONS
AND ANSWERS. VERIFIED
1. When operating near power lines of unknown voltage, what is the minimum clearance
required for a crane according to OSHA 1926.1408 for voltages up to 350kV?
A. 10 feet
B. 20 feet
C. 15 feet
D. 25 feet
Answer: B
Conceptual Explanation: According to OSHA 1926.1408, if the voltage is unknown and the
equipment could get within 20 feet, the employer must assume the voltage is up to 350kV
and maintain a 20-foot clearance.
2. What is the design factor for rotation-resistant wire rope used as a hoist line on a mobile
crane?
A. 3.5 to 1
B. 5 to 1
,C. 10 to 1
D. 7 to 1
Answer: C
Conceptual Explanation: ASME B30.5 requires a design factor of at least 10 to 1 for
rotation-resistant rope, compared to 3.5 to 1 for standard rope.
3. When a crane is out of level by only 3 degrees, what percentage of capacity can be lost
when operating at a long boom length?
A. Up to 50%
B. Up to 25%
C. Up to 10%
D. Loss is negligible
Answer: A
Conceptual Explanation: Being out of level drastically reduces capacity due to side
loading; at 3 degrees, capacity loss can exceed 50% on long boom configurations.
4. Which of the following is considered a ‘deduction’ from the crane’s gross capacity to
determine net capacity?
A. The weight of the load being lifted
B. The weight of the headache ball
C. The weight of the fuel in the crane
, D. The operator’s weight
Answer: B
Conceptual Explanation: Items like the block, ball, slings, and stowed jibs are considered
deductions from gross capacity.
5. According to OSHA, who is responsible for ensuring the ground is firm and able to support
the crane’s weight and load?
A. The crane operator
B. The oiler
C. The controlling entity/Project Manager
D. The local building inspector
Answer: C
Conceptual Explanation: OSHA 1926.1402 states the controlling entity must ensure that
the ground is sufficient to support the crane.
6. If a crane’s load chart indicates a capacity is ‘structural’, what happens if you exceed it?
A. The boom or components may fail or collapse without warning
B. The crane will tip over
C. The LMI will simply shut off the crane
D. The outriggers will lift off the ground
AND ANSWERS. VERIFIED
1. When operating near power lines of unknown voltage, what is the minimum clearance
required for a crane according to OSHA 1926.1408 for voltages up to 350kV?
A. 10 feet
B. 20 feet
C. 15 feet
D. 25 feet
Answer: B
Conceptual Explanation: According to OSHA 1926.1408, if the voltage is unknown and the
equipment could get within 20 feet, the employer must assume the voltage is up to 350kV
and maintain a 20-foot clearance.
2. What is the design factor for rotation-resistant wire rope used as a hoist line on a mobile
crane?
A. 3.5 to 1
B. 5 to 1
,C. 10 to 1
D. 7 to 1
Answer: C
Conceptual Explanation: ASME B30.5 requires a design factor of at least 10 to 1 for
rotation-resistant rope, compared to 3.5 to 1 for standard rope.
3. When a crane is out of level by only 3 degrees, what percentage of capacity can be lost
when operating at a long boom length?
A. Up to 50%
B. Up to 25%
C. Up to 10%
D. Loss is negligible
Answer: A
Conceptual Explanation: Being out of level drastically reduces capacity due to side
loading; at 3 degrees, capacity loss can exceed 50% on long boom configurations.
4. Which of the following is considered a ‘deduction’ from the crane’s gross capacity to
determine net capacity?
A. The weight of the load being lifted
B. The weight of the headache ball
C. The weight of the fuel in the crane
, D. The operator’s weight
Answer: B
Conceptual Explanation: Items like the block, ball, slings, and stowed jibs are considered
deductions from gross capacity.
5. According to OSHA, who is responsible for ensuring the ground is firm and able to support
the crane’s weight and load?
A. The crane operator
B. The oiler
C. The controlling entity/Project Manager
D. The local building inspector
Answer: C
Conceptual Explanation: OSHA 1926.1402 states the controlling entity must ensure that
the ground is sufficient to support the crane.
6. If a crane’s load chart indicates a capacity is ‘structural’, what happens if you exceed it?
A. The boom or components may fail or collapse without warning
B. The crane will tip over
C. The LMI will simply shut off the crane
D. The outriggers will lift off the ground
