Crane Operator Certification Exam Prep · Question
A crane operator observes that the crane's level indicator bubble is touching the inner edge of the marked circle. This usually indicates an out-of-level condition of approximately:
A bubble touching the inner edge of the circle on a typical crane level indicator commonly represents a deviation of 0.5 to 1.0 degrees. This is often the maxim
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Question: A crane operator observes that the crane's level indicator bubble is touching the inner edge of the marked circle. This usually indicates an out-of-level condition of approximately:
Answer options:
- 0.25 to 0.5 degrees ✅ 0.5 to 1.0 degrees
- 1.0 to 2.0 degrees
- More than 2.0 degrees
Correct answer: 0.5 to 1.0 degrees
Explanation: A bubble touching the inner edge of the circle on a typical crane level indicator commonly represents a deviation of 0.5 to 1.0 degrees. This is often the maximum permissible for safe operation, aligning with the 1% out-of-level rule (approximately 0.57 degrees).
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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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