Overhead Crane Practice Test 2025 - Free Overhead Crane Practice Questions and Study Guide

The hoist controller is the component that specifically regulates the vertical movement of an overhead crane. It is responsible for powering the hoist mechanism, allowing the operator to raise or lower the load by controlling the speed and direction of the hoist. The hoist mechanism typically incorporates a motor that drives a drum or reel, around which the lifting cable or chain is wound, facilitating the vertical motion needed for lifting and lowering materials.

In contrast, the bridge and trolley controller primarily governs the horizontal movement of the crane along the runway and the side-to-side movement of the trolley, playing a crucial role in the overall operation but not in controlling vertical ascent or descent. The load block, while integral to lifting, refers to the system that contains the hook or attachment point for the load, rather than the control mechanism itself. The main switch serves as the power source switch for the entire crane system, providing or cutting off electricity but not directly influencing the vertical motion of lifting and lowering loads.