Crane Operator Certification Exam Prep · Question
What is the function of an Anti-Two-Block (ATB) device on a crane?
The ATB device is a crucial safety system that detects when the hook block approaches the boom tip and automatically stops hoisting to prevent a dangerous two-b
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Question: What is the function of an Anti-Two-Block (ATB) device on a crane?
Answer options: ✅ To prevent the hook block from colliding with the boom tip
- To automatically stop the crane's engine if overloaded
- To measure the ground bearing pressure of the outriggers
- To alert the operator to high wind speeds
Correct answer: To prevent the hook block from colliding with the boom tip
Explanation: The ATB device is a crucial safety system that detects when the hook block approaches the boom tip and automatically stops hoisting to prevent a dangerous two-block condition, as required by CSA Z150.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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