NCCCO Mobile Crane Questions and

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NCCCO Mobile Crane Questions and Answers | Latest Version | / | Correct & Verified

What is the primary purpose of an outrigger on a mobile crane?

• To support the boom

✔✔ B. To provide stability during lifting operations

• To increase lifting capacity
• To connect the crane to the load

When lifting a load, why is it important to keep the load as close to the ground as possible?

• To reduce wind resistance

✔✔ B. To maintain stability and control

• To make it easier to move
• To improve visibility for the operator

What is the function of the load chart on a mobile crane?✔✔ A. To provide information about the crane's lifting capacity at various configurations

• To record past lifts 1 / 4

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• To display maintenance schedules
• To show fuel consumption

Why should a mobile crane operator avoid rapid swinging of the load?

• It causes wear on the crane’s components

✔✔ B. It can destabilize the crane and create a tipping hazard

• It reduces the speed of operations
• It increases fuel consumption

What is the purpose of the anti-two-block system on a crane?✔✔ A. To prevent the hook block from striking the boom tip

• To ensure proper lifting angles
• To monitor the load weight
• To stop the crane if it becomes unstable

When working near power lines, what is the minimum safe working distance?✔✔ A. 20 feet

• 10 feet 2 / 4

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• 15 feet
• 5 feet

What is the maximum percentage of a crane’s capacity that should typically be used for lifting?

A. 100%

✔✔ B. 75% to allow for safety margins

C. 50%

D. 90%

What is the main factor to consider when determining the lifting capacity of a mobile crane?

• The speed of the lift

✔✔ B. The boom length and radius

• The operator’s experience
• The type of load

Why is proper rigging critical when lifting with a mobile crane?✔✔ A. To ensure the load is secure and balanced

• To speed up lifting operations 3 / 4

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• To reduce the weight of the load
• To improve crane visibility

What should you do if the crane becomes unstable during a lift?

• Continue the lift slowly

✔✔ B. Stop the operation immediately and lower the load

• Move the crane to a stable position
• Reduce the boom length

What is the purpose of the counterweight on a mobile crane?✔✔ A. To balance the crane and prevent tipping during lifting operations

• To reduce the weight of the load
• To stabilize the outriggers
• To improve operator visibility

When traveling with a load, what is the most important consideration?

• The length of the boom
• The speed of travel
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