NCCCO CORE FINAL EXAM
QUESTIONS WITH VERIFIED ANSWERS
2026/2027
1. According to OSHA 1926.1408, what is the minimum clearance distance for power lines
rated up to 50kV when the voltage is known?
A. 10 feet
B. 15 feet
C. 20 feet
D. 5 feet
Answer: A
Conceptual Explanation: OSHA requires a minimum clearance of 10 feet for voltages up to
50kV to prevent accidental contact.
2. When leveling a crane, at what point should the level be checked to ensure accuracy?
A. Only at the front and back of the carrier
B. On the ground next to the outrigger pads
C. On the boom itself while at a 0-degree angle
,D. On the turntable or a surface recommended by the manufacturer
Answer: D
Conceptual Explanation: The turntable is the most accurate point for leveling the crane’s
rotation axis.
3. Which of the following describes the ‘Gross Capacity’ of a crane?
A. The total capacity listed in the load chart before deductions
B. The weight of the load only
C. The capacity after deducting the weight of the block and rigging
D. The weight of the boom and the load combined
Answer: A
Conceptual Explanation: Gross capacity is the value found in the load chart; Net capacity
is Gross minus deductions like the block, rigging, and effective weight of the jib.
4. What is the standard design factor for running wire rope used on mobile cranes?
A. 3.5 to 1
B. 5.0 to 1
C. 2.0 to 1
D. 10.0 to 1
Answer: A
, Conceptual Explanation: ASME B30.5 and OSHA specify a 3.5:1 design factor for running
ropes.
5. If a crane is not level by 3 degrees, how much can the capacity be reduced on a long boom?
A. 5%
B. It has no effect
C. 10%
D. Up to 50%
Answer: D
Conceptual Explanation: Side loading caused by being out of level significantly increases
stress on the boom, potentially reducing capacity by 50%.
6. Which signal person’s action indicates an ‘Emergency Stop’?
A. Both arms extended, palms down, moving rapidly horizontally
B. One arm extended, palm down, moving horizontally
C. Tapping the top of the head with one hand
D. Clenching both fists in front of the body
Answer: A
Conceptual Explanation: While one arm is a standard stop, both arms moving rapidly
signifies an emergency stop.
QUESTIONS WITH VERIFIED ANSWERS
2026/2027
1. According to OSHA 1926.1408, what is the minimum clearance distance for power lines
rated up to 50kV when the voltage is known?
A. 10 feet
B. 15 feet
C. 20 feet
D. 5 feet
Answer: A
Conceptual Explanation: OSHA requires a minimum clearance of 10 feet for voltages up to
50kV to prevent accidental contact.
2. When leveling a crane, at what point should the level be checked to ensure accuracy?
A. Only at the front and back of the carrier
B. On the ground next to the outrigger pads
C. On the boom itself while at a 0-degree angle
,D. On the turntable or a surface recommended by the manufacturer
Answer: D
Conceptual Explanation: The turntable is the most accurate point for leveling the crane’s
rotation axis.
3. Which of the following describes the ‘Gross Capacity’ of a crane?
A. The total capacity listed in the load chart before deductions
B. The weight of the load only
C. The capacity after deducting the weight of the block and rigging
D. The weight of the boom and the load combined
Answer: A
Conceptual Explanation: Gross capacity is the value found in the load chart; Net capacity
is Gross minus deductions like the block, rigging, and effective weight of the jib.
4. What is the standard design factor for running wire rope used on mobile cranes?
A. 3.5 to 1
B. 5.0 to 1
C. 2.0 to 1
D. 10.0 to 1
Answer: A
, Conceptual Explanation: ASME B30.5 and OSHA specify a 3.5:1 design factor for running
ropes.
5. If a crane is not level by 3 degrees, how much can the capacity be reduced on a long boom?
A. 5%
B. It has no effect
C. 10%
D. Up to 50%
Answer: D
Conceptual Explanation: Side loading caused by being out of level significantly increases
stress on the boom, potentially reducing capacity by 50%.
6. Which signal person’s action indicates an ‘Emergency Stop’?
A. Both arms extended, palms down, moving rapidly horizontally
B. One arm extended, palm down, moving horizontally
C. Tapping the top of the head with one hand
D. Clenching both fists in front of the body
Answer: A
Conceptual Explanation: While one arm is a standard stop, both arms moving rapidly
signifies an emergency stop.
