What type of crane typically uses electric or hydraulic power?

Cranes that operate using electric or hydraulic power are often categorized by their design and operational capacity. In this context, cranes classified in specific categories, such as Category 1 or 4, are typically designed for heavy-duty applications that require significant lifting power and precise control mechanisms, which are best achieved through hydraulic or electric systems.

These systems provide enhanced functionality, allowing for smoother operations, greater lifting capabilities, and improved safety features. For instance, hydraulic cranes leverage the principles of fluid power to generate the force required to lift heavy loads, while electric cranes use electrical systems to power their movements efficiently. This makes them suitable for diverse industrial applications, including construction, manufacturing, and material handling.

In contrast, the other choices suggest configurations and specifications that may imply limitations in lifting capacity, functionality, or operational environments that do not necessarily require or often employ electric or hydraulic power. Therefore, cranes in Categories 1 or 4, which can include various models built for robust lifting scenarios, are more aligned with the use of these advanced power systems.