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What type of device is the load boom indicator on a mobile crane?

  1. Pressure sensor

  2. Moment indicator

  3. Angle sensor

  4. Weight scale

The correct answer is: Moment indicator

A load boom indicator on a mobile crane is classified as a moment indicator, which is crucial for ensuring the crane operates within safe parameters. The moment indicator measures the forces acting on the crane and evaluates the load's position and weight relative to the crane's capabilities. This device helps prevent accidents related to tipping and ensures stability by monitoring the load moment, which is a critical factor in crane operation. Using a moment indicator, operators can make informed decisions about lifting and positioning loads, enhancing safety on the job site. This type of indicator provides real-time feedback regarding the current lifting status, allowing for prompt adjustments when necessary. Overall, the role of a moment indicator is integral to crane safety protocols and effective operation management.