NEIEP Mechanics Practice Exam

When the car is closer than the proper slowdown distance, which circuit prevents an elevator from getting the stopping signal?

1. Direct call circuit

2. Late call refusal

3. Overload circuit

4. Emergency stop circuit

The correct answer is: Late call refusal

The late call refusal circuit is designed to ensure safety by preventing an elevator from responding to a call that is made when the car is too close to the landing. This is particularly important because the elevator needs adequate distance to slow down and stop safely. If the car is too close, a stopping signal may not be transmitted, which helps to prevent potential hazards that could arise from the elevator failing to stop correctly or colliding with the landing. In contrast, the direct call circuit is responsible for registering calls made by users, while the overload circuit functions to prevent the elevator from operating when it detects a weight that exceeds its capacity. The emergency stop circuit typically allows for immediate cessation of the elevator's movement in critical situations but does not specifically address the measurement of distance in relation to proper stopping. Therefore, the late call refusal circuit is specifically tailored to manage scenarios when the elevator is not in an optimal position to safely stop, thereby prioritizing safety in its operation.