Massachusetts 2B Hoisting License Practice Exam 2025 – Your All-in-One Guide to Mastering the License Exam!

The correct answer is the hoist mechanism, as it is a critical component of a crane designed specifically for the task of lifting and lowering loads. The hoist mechanism typically consists of a drum, wire rope, and sometimes a reeving system that allows for the controlled movement of heavy items. It is operated by a motor or winch system that provides the necessary power to lift and lower loads safely and efficiently.

The boom, while important, primarily serves as the arm extension that supports the load and dictates the reach and angle at which the load can be lifted. The frame provides structural integrity and stability to the crane, ensuring it can safely bear loads during operation. The counterweight helps balance the crane and prevent tipping when loads are lifted, but it is not involved in the direct action of lifting or lowering the load itself. Thus, understanding the unique roles of each component highlights why the hoist mechanism is the key element responsible for the primary function of the crane.