NCCCO CORE CERTIFICATION FINAL
PREP EXAM QUESTIONS WITH
VERIFIED ANSWERS 2026/2027
1. According to OSHA 1926.1402, who is responsible for ensuring that the ground conditions
are adequate to support the equipment?
A. The controlling entity
B. The site supervisor
C. The crane operator
D. The lift director
Answer: A
Conceptual Explanation: OSHA 1926.1402 states the controlling entity is responsible for
ensuring the ground conditions are sufficient to support the crane and its load.
2. What is the design factor for rotation-resistant wire rope used as a hoist line?
A. 3.5 to 1
B. 5 to 1
C. 10 to 1
,D. 2 to 1
Answer: C
Conceptual Explanation: ASME B30.5 and OSHA standards require a 10 to 1 design factor
for rotation-resistant wire rope when used for hoisting.
3. When a crane is out of level, it causes the most stress on which component?
A. The boom side structure
B. The hoist wire rope
C. The outrigger beams
D. The swing motor
Answer: A
Conceptual Explanation: Operating a crane out of level creates side-loading on the boom,
which can lead to structural failure.
4. For power lines rated up to 50kV, what is the minimum clearance distance required by
OSHA 1926.1408?
A. 45 feet
B. 15 feet
C. 20 feet
D. 10 feet
, Answer: D
Conceptual Explanation: OSHA requires a minimum clearance of 10 feet for power lines
up to 50kV.
5. When is the boom tip elevation at its highest point relative to the load?
A. Short boom at a low angle
B. Long boom at a low angle
C. Long boom at a high angle
D. Short boom at a high angle
Answer: C
Conceptual Explanation: The tip elevation increases with both boom length and a higher
boom angle.
6. What is the result of ‘booming down’ a telescopic crane without adjusting the hoist line?
A. The load will raise
B. The load radius stays the same
C. The load will lower
D. The capacity increases
Answer: C
PREP EXAM QUESTIONS WITH
VERIFIED ANSWERS 2026/2027
1. According to OSHA 1926.1402, who is responsible for ensuring that the ground conditions
are adequate to support the equipment?
A. The controlling entity
B. The site supervisor
C. The crane operator
D. The lift director
Answer: A
Conceptual Explanation: OSHA 1926.1402 states the controlling entity is responsible for
ensuring the ground conditions are sufficient to support the crane and its load.
2. What is the design factor for rotation-resistant wire rope used as a hoist line?
A. 3.5 to 1
B. 5 to 1
C. 10 to 1
,D. 2 to 1
Answer: C
Conceptual Explanation: ASME B30.5 and OSHA standards require a 10 to 1 design factor
for rotation-resistant wire rope when used for hoisting.
3. When a crane is out of level, it causes the most stress on which component?
A. The boom side structure
B. The hoist wire rope
C. The outrigger beams
D. The swing motor
Answer: A
Conceptual Explanation: Operating a crane out of level creates side-loading on the boom,
which can lead to structural failure.
4. For power lines rated up to 50kV, what is the minimum clearance distance required by
OSHA 1926.1408?
A. 45 feet
B. 15 feet
C. 20 feet
D. 10 feet
, Answer: D
Conceptual Explanation: OSHA requires a minimum clearance of 10 feet for power lines
up to 50kV.
5. When is the boom tip elevation at its highest point relative to the load?
A. Short boom at a low angle
B. Long boom at a low angle
C. Long boom at a high angle
D. Short boom at a high angle
Answer: C
Conceptual Explanation: The tip elevation increases with both boom length and a higher
boom angle.
6. What is the result of ‘booming down’ a telescopic crane without adjusting the hoist line?
A. The load will raise
B. The load radius stays the same
C. The load will lower
D. The capacity increases
Answer: C
