NEIEP Mechanics Practice Exam

What is the role of the selector in an elevator system?

1. To measure weight

2. To manage call registrations

3. To control elevator movement direction

4. To handle emergency responses

The correct answer is: To control elevator movement direction

The selector in an elevator system is primarily responsible for controlling the direction of the elevator's movement. This device helps the elevator system determine where the car should go based on the registered calls from passengers. When a call is made for the elevator to ascend or descend to a specific floor, the selector ensures that the elevator is instructed to travel in the appropriate direction. By effectively managing this critical function, the selector enhances the efficiency and responsiveness of the elevator system, contributing to smooth and safe operations. While measuring weight, managing call registrations, and handling emergency responses are also vital aspects of elevator systems, they fall under different components or systems rather than the selector's specific role. The weighting is typically handled by load sensors, call registrations are managed through the control system that monitors and processes passenger requests, and emergency responses are coordinated by safety mechanisms designed to ensure passenger safety during unforeseen incidents. Thus, the primary function of the selector is focused on directing movement, making it indispensable for optimal elevator operation.