Elevator Mechanic Practice Exam

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Where is weight added on a freight door for balancing?

In the center of the door

On the sides

On the top

Adding weight to the top of a freight door is essential for achieving proper balance. When weight is placed at the top, it helps lower the center of gravity, stabilizing the door when it is open or closed. This positioning aids in reducing the risk of the door being lifted by external forces, such as wind, and ensures smooth operation throughout its cycle.

Balancing a freight door involves critical considerations of how the door's weight distribution affects its functioning. While placing weight in the center or on the sides may seem like viable options at first glance, doing so would not provide the same level of stability as weight at the top. Weight at the bottom is also not ideal, as it can cause the door to be top-heavy and more prone to swinging or tipping. Properly weighting the top ensures that the door operates effectively and safely within its intended application.

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On the bottom

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