NEIEP Mechanics Practice Exam

Which type of safety mechanism incorporates an oil buffer between the car and safety planks?

1. Type A

2. Type B

3. Type C

4. Type D

The correct answer is: Type C

The correct response is based on the understanding of safety mechanisms used in elevators, specifically those that utilize an oil buffer system. An oil buffer functions as a shock-absorbing mechanism that helps manage the impact forces when an elevator car descends rapidly or encounters a sudden stop. In Type C safety systems, the oil buffer is strategically placed between the car and the safety planks, ensuring that in the event of an emergency, the oil buffer effectively dampens the descent by absorbing kinetic energy. This provides a smoother, more controlled stop, thus improving passenger safety and reducing the risk of mechanical failure. This type of design is particularly beneficial in minimizing wear and tear on the elevator components, as the oil serves as a cushion, preventing metal-on-metal impact. It is essential for maintaining the integrity of the system and ensuring a safe operational environment. Options that do not involve this specific mechanism would lack the oil buffer feature, which makes them less effective in dealing with rapid descent scenarios. Thus, the distinct attribute of an oil buffer sets Type C apart as the correct choice in this context.