Elevator Mechanic Practice Exam

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What is the purpose of using a thumb up signal in crane operations?

  1. Boom down

  2. Boom out

  3. Boom up

  4. Hoist down

The correct answer is: Boom down

The thumb up signal in crane operations is typically used to indicate that the operator should move the boom up. This signal is part of standard hand signals used in crane operations to facilitate clear communication between the operator and the ground crew. Using specific signals helps ensure safety and coordination, preventing accidents during lifting operations. In this context, when a thumb-up gesture is displayed, it is recognized by crane operators as a request to elevate the boom. The other options relate to different actions that are not associated with the thumb up signal, which specifically denotes an upward movement. Understanding these hand signals is crucial for effective and safe crane operation.

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