Tension on the governor rope is maintained by using what component?

The correct answer is the tension sheave. In elevator systems, the tension sheave plays a crucial role in maintaining appropriate tension on the governor rope. This component not only provides a mechanical interface that helps manage the rope's position and slack but also ensures that the governor functions correctly by allowing it to respond to the elevator's speed and movement.

The tension sheave works by applying a force to the governor rope, ensuring it stays taut. This tautness is vital for the proper operation of the governor, which is responsible for managing the elevator's speed and activating safety mechanisms during emergency situations. If the tension on the rope were to fluctuate, it could lead to improper governor function, potentially compromising safety.

In contrast, the governor weight and governor spring serve different purposes within the governor assembly. The governor weight is pivotal for the governor's response to speed changes, while the governor spring provides a means for resetting or returning the governor to its original position after speed regulation events occur. The sheave pulley, while related to the overall mechanics of pulley systems, does not directly affect the tension on the governor rope like the tension sheave does. Therefore, selecting the tension sheave as the component that maintains rope tension accurately reflects its specific function within the elevator system.