NCCCO CORE MIDTERM EXAM STUDY
GUIDE 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?
A. 10 feet
B. 15 feet
C. 20 feet
D. 50 feet
Answer: A
Conceptual Explanation: For voltages up to 50kV, OSHA requires a minimum clearance of
10 feet to prevent electrical encroachment.
2. When a crane is not level, how does this affect the load radius?
A. It decreases the radius
B. It has no effect on the radius
C. It only affects the boom angle
D. It increases the radius on the low side
,Answer: D
Conceptual Explanation: If a crane is out of level, the load will swing away from the center
of the crane on the low side, effectively increasing the load radius.
3. What is the primary purpose of a ‘Tag Line’ during lifting operations?
A. To carry a portion of the load weight
B. To control the rotation of the load
C. To signal the operator
D. To secure the load to the crane boom
Answer: B
Conceptual Explanation: Tag lines are used to control the rotation or swing of a load,
preventing it from striking the crane or other obstacles.
4. According to ASME B30.5, how many full wraps of rope must remain on the drum when the
hook is at its lowest point?
A. One wrap
B. Three wraps
C. Two wraps
D. Five wraps
Answer: C
, Conceptual Explanation: ASME B30.5 requires that at least two full wraps of rope remain
on the drum at all times to ensure the rope attachment is not overloaded.
5. The ‘Tipping Axis’ of a crawler crane is located at:
A. The center of the track rollers on the side the load is being lifted
B. The center of the drive sprocket
C. The center of the idler roller
D. The center of the rotation
Answer: A
Conceptual Explanation: The tipping axis for a crawler crane is the centerline of the track
rollers on the side toward which the crane would tip.
6. Which of the following describes ‘Side Loading’?
A. Lifting a load from the side of the crane
B. Swinging the load too fast
C. Loading the crane onto a trailer
D. A horizontal force applied to the boom during a lift
Answer: D
Conceptual Explanation: Side loading occurs when a force is applied to the side of the
boom, which can lead to structural failure.
GUIDE 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?
A. 10 feet
B. 15 feet
C. 20 feet
D. 50 feet
Answer: A
Conceptual Explanation: For voltages up to 50kV, OSHA requires a minimum clearance of
10 feet to prevent electrical encroachment.
2. When a crane is not level, how does this affect the load radius?
A. It decreases the radius
B. It has no effect on the radius
C. It only affects the boom angle
D. It increases the radius on the low side
,Answer: D
Conceptual Explanation: If a crane is out of level, the load will swing away from the center
of the crane on the low side, effectively increasing the load radius.
3. What is the primary purpose of a ‘Tag Line’ during lifting operations?
A. To carry a portion of the load weight
B. To control the rotation of the load
C. To signal the operator
D. To secure the load to the crane boom
Answer: B
Conceptual Explanation: Tag lines are used to control the rotation or swing of a load,
preventing it from striking the crane or other obstacles.
4. According to ASME B30.5, how many full wraps of rope must remain on the drum when the
hook is at its lowest point?
A. One wrap
B. Three wraps
C. Two wraps
D. Five wraps
Answer: C
, Conceptual Explanation: ASME B30.5 requires that at least two full wraps of rope remain
on the drum at all times to ensure the rope attachment is not overloaded.
5. The ‘Tipping Axis’ of a crawler crane is located at:
A. The center of the track rollers on the side the load is being lifted
B. The center of the drive sprocket
C. The center of the idler roller
D. The center of the rotation
Answer: A
Conceptual Explanation: The tipping axis for a crawler crane is the centerline of the track
rollers on the side toward which the crane would tip.
6. Which of the following describes ‘Side Loading’?
A. Lifting a load from the side of the crane
B. Swinging the load too fast
C. Loading the crane onto a trailer
D. A horizontal force applied to the boom during a lift
Answer: D
Conceptual Explanation: Side loading occurs when a force is applied to the side of the
boom, which can lead to structural failure.
