NCCCO CORE EXAM REVIEW
QUESTIONS WITH VERIFIED ANSWERS
2026/2027
1. According to OSHA 1926.1408, what is the minimum clearance distance for power lines up
to 50kV when the voltage is not known?
A. 15 feet
B. 10 feet
C. 20 feet
D. 45 feet
Answer: B
Conceptual Explanation: For lines up to 50kV, the minimum clearance is 10 feet. If the
voltage is unknown, OSHA requires maintaining 20 feet unless the utility owner confirms
the voltage.
,2. Which of the following describes the ‘Net Capacity’ of a crane?
A. Gross capacity minus deductions like the block and rigging
B. Gross capacity minus the weight of the load
C. The total capacity shown on the load chart
D. The weight of the load only
Answer: A
Conceptual Explanation: Net capacity is the actual amount of weight the crane can lift
after subtracting all capacity deductions (block, ball, rigging, etc.) from the Gross Capacity.
3. What happens to the leverage of a crane as the boom angle decreases?
A. Leverage increases
B. Capacity increases
C. Leverage remains constant
D. Leverage decreases
Answer: D
Conceptual Explanation: As the boom angle decreases, the load radius increases, which
reduces the crane’s leverage and stability, thereby decreasing its capacity.
4. When is it acceptable to bypass a crane’s Load Moment Indicator (LMI)?
A. During an emergency lift
, B. Only for assembly/disassembly or testing under supervision
C. When the LMI is malfunctioning during a critical lift
D. Never
Answer: B
Conceptual Explanation: Bypassing safety devices like an LMI is prohibited during normal
operations but allowed for specific technical procedures like assembly or calibration.
5. A crane is leveled to within 1% of grade. What is the impact on capacity?
A. No impact, the crane is designed for 1% grade
B. Capacity can be significantly reduced due to side loading
C. Capacity is increased by 1%
D. Stability increases
Answer: B
Conceptual Explanation: Crane charts are based on a perfectly level machine. Even a 1%
off-level condition can cause side loading and drastically reduce capacity.
6. What is the design factor for rotation-resistant wire rope used as a hoist line?
A. 10 to 1
B. 5 to 1
C. 3.5 to 1
QUESTIONS WITH VERIFIED ANSWERS
2026/2027
1. According to OSHA 1926.1408, what is the minimum clearance distance for power lines up
to 50kV when the voltage is not known?
A. 15 feet
B. 10 feet
C. 20 feet
D. 45 feet
Answer: B
Conceptual Explanation: For lines up to 50kV, the minimum clearance is 10 feet. If the
voltage is unknown, OSHA requires maintaining 20 feet unless the utility owner confirms
the voltage.
,2. Which of the following describes the ‘Net Capacity’ of a crane?
A. Gross capacity minus deductions like the block and rigging
B. Gross capacity minus the weight of the load
C. The total capacity shown on the load chart
D. The weight of the load only
Answer: A
Conceptual Explanation: Net capacity is the actual amount of weight the crane can lift
after subtracting all capacity deductions (block, ball, rigging, etc.) from the Gross Capacity.
3. What happens to the leverage of a crane as the boom angle decreases?
A. Leverage increases
B. Capacity increases
C. Leverage remains constant
D. Leverage decreases
Answer: D
Conceptual Explanation: As the boom angle decreases, the load radius increases, which
reduces the crane’s leverage and stability, thereby decreasing its capacity.
4. When is it acceptable to bypass a crane’s Load Moment Indicator (LMI)?
A. During an emergency lift
, B. Only for assembly/disassembly or testing under supervision
C. When the LMI is malfunctioning during a critical lift
D. Never
Answer: B
Conceptual Explanation: Bypassing safety devices like an LMI is prohibited during normal
operations but allowed for specific technical procedures like assembly or calibration.
5. A crane is leveled to within 1% of grade. What is the impact on capacity?
A. No impact, the crane is designed for 1% grade
B. Capacity can be significantly reduced due to side loading
C. Capacity is increased by 1%
D. Stability increases
Answer: B
Conceptual Explanation: Crane charts are based on a perfectly level machine. Even a 1%
off-level condition can cause side loading and drastically reduce capacity.
6. What is the design factor for rotation-resistant wire rope used as a hoist line?
A. 10 to 1
B. 5 to 1
C. 3.5 to 1
