NCCCO Questions and Answers 100%
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What is the purpose of a swing brake on a mobile crane?
The swing brake prevents the crane’s upper structure from rotating unintentionally, ensuring
safe and precise positioning of the load.
Why should the load chart be reviewed before lifting a l...
NCCCO Questions and Answers 100%
Pass
What is the purpose of a swing brake on a mobile crane?
✔✔ The swing brake prevents the crane’s upper structure from rotating unintentionally, ensuring
safe and precise positioning of the load.
Why should the load chart be reviewed before lifting a load?
✔✔ The load chart provides crucial information about the crane’s lifting capacity at different
boom lengths and angles, preventing overload.
What can happen if a crane is overloaded?
✔✔ Overloading a crane can cause structural failure, tipping, or loss of control, leading to
serious accidents or damage.
How is the crane’s lifting capacity affected when the boom is extended?
✔✔ As the boom is extended, the lifting capacity decreases due to increased leverage and the
crane’s reduced stability.
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, Why is it necessary to use blocking or cribbing under outriggers?
✔✔ Blocking or cribbing distributes the crane’s weight more evenly over a larger surface area,
preventing the outriggers from sinking into soft ground.
What is the purpose of counterweights on a crane?
✔✔ Counterweights balance the crane, providing stability and preventing it from tipping when
lifting heavy loads.
What is a boom angle indicator used for?
✔✔ A boom angle indicator shows the angle of the boom relative to the ground, helping the
operator maintain safe lifting parameters.
Why is proper communication between the crane operator and the signal person important?
✔✔ Proper communication ensures that the operator knows exactly when and how to move the
crane, preventing accidents or misalignment of the load.
What does a load radius refer to in crane operation?
✔✔ Load radius refers to the horizontal distance from the center of rotation of the crane to the
load, which affects the crane's lifting capacity.
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