NCCCO Core Exam Prep Latest

NCCCO Core Exam Prep | Latest – Update | Questions and Verified Answers | 100% Correct | Grade A Instructions: This prep exam for the NCCCO Core Certification Exam contains 31 multiple-choice questions, reflecting the typical format based on the / updates to the NCCCO Core Exam outline. The exam covers key areas: site safety, crane setup, load charts, signals, operations, and regulations (e.g., ASME B30.5, OSHA 1926 Subpart CC). Each question has four options (A–D), the correct answer marked, and a supporting rationale explaining why it is correct and why others are incorrect. Each question is worth approximately 3.23 points (total 100 points). Use this for study and review. Good luck!Question 1 What is the minimum clearance required between a crane and an energized power line under 50 kV?

• 10 feet
• 20 feet
• 5 feet
• 15 feet

Correct Answer: A

Rationale: OSHA 1926.1408 requires 10 feet clearance for power lines under 50 kV to prevent electrocution. Why correct: Standard safety distance for low-voltage lines. Why others are incorrect: 20 feet (B) is for higher voltage (50-200 kV); 5 feet (C) is too close; 15 feet (D) is not a standard.Question 2 According to ASME B30.5, who is responsible for determining if a crane is safe to operate? 1 / 2

• The operator
• The qualified person
• The signal person
• The rigger

Correct Answer: B

Rationale: A qualified person (e.g., inspector) assesses crane safety before use, per ASME B30.5. Why correct: Ensures compliance and safety. Why others are incorrect: Operator (A) performs pre-shift checks but not full assessment; signal person (C) directs loads; rigger (D) handles slings.Question 3 What does the term "duty cycle" refer to in crane operations?

• Repeated short-duration lifts
• Long-term static loads
• Single heavy lifts
• Idle time between operations

Correct Answer: A

Rationale: Duty cycle involves frequent, short lifts (e.g., in construction), requiring capacity derating, per ASME B30.5. Why correct: Defines operational cycle. Why others are incorrect: Static (B) is not dynamic; single (C) is one-time; idle (D) is downtime.Question 4 When rigging a load, what is the primary purpose of using a tag line?

• To control load swing
• To increase load capacity
• To measure load weight
• To secure the sling

Correct Answer: A

Rationale: Tag lines prevent uncontrolled swinging of loads during hoisting, per OSHA 1926.753.Why correct: Enhances safety. Why others are incorrect: Capacity (B) is chart-based; weight (C) is scales; sling (D) is knots.

• / 2