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What is the function of an elevator door restrictor?

  1. To prevent the door from opening when the elevator is between floors

  2. To slow down the door closing speed

  3. To adjust the force of the door closure

  4. To ensure the door opens smoothly

The correct answer is: To prevent the door from opening when the elevator is between floors

The primary function of an elevator door restrictor is to prevent the door from opening when the elevator car is positioned between floors. This is crucial for safety, as it reduces the risk of passengers inadvertently stepping out of the elevator while it is not at a designated landing, which could lead to serious accidents or injuries. While the other functions might seem relevant to elevator operation, they do not capture the specific safety role of the door restrictor. The restrictor focuses primarily on door operation in relation to the elevator car’s position, ensuring that passengers remain safely inside the elevator until it has reached a proper landing.