NEIEP Mechanics Practice Exam

What is the primary function of group controllers in elevator systems?

1. To control speed of individual cars

2. To coordinate movement of multiple cars

3. To monitor passenger capacity

4. To maintain system diagnostics

The correct answer is: To coordinate movement of multiple cars

The primary function of group controllers in elevator systems is to coordinate the movement of multiple cars. This technology is essential in high-rise buildings with several elevators operating simultaneously. Group controllers manage the efficiency and routing of the elevators to reduce wait times for passengers and enhance service reliability. By determining the best possible assignments for each elevator in response to passenger calls, group controllers optimize traffic patterns and ensure that elevators are dispatched to respond to requests efficiently. This coordination allows for improved energy use and can lead to reduced wear and tear on individual elevator components. Other functions listed, such as controlling the speed of individual cars or monitoring passenger capacity, while important, fall more under the realm of individual elevator control or specific monitoring systems rather than the overarching management and coordination that a group controller provides. Maintaining system diagnostics is also a crucial aspect, but it primarily supports the overall functioning rather than the direct coordination of multiple elevator cars.