Elevator Mechanic Practice Exam

What type of safeties are required on an elevator car that travels at 300 feet per minute?

1. Type B wedge clamp

2. Type A clamp

3. Ball safety

4. Magnetic safety

The correct answer is: Type B wedge clamp

The correct type of safety mechanism required for an elevator car traveling at 300 feet per minute is a type B wedge clamp. This design is specifically engineered to provide secure stopping and holding capabilities at higher speeds, ensuring safety in the event of a malfunction or overspeed condition. Type B wedge clamps are known for their reliable performance in friction-type braking systems, making them well-suited for mid-range elevator applications like this. Their wedging action allows for effective engagement with the rail when activated, immediately halting the elevator car's descent or ascent, which is crucial for passenger safety. Other safety types may not be adequate for the speed of 300 feet per minute. While type A clamps and other safety mechanisms can be effective in different applications or at lower speeds, they do not meet the specific requirements for an elevator operating at this velocity, thus highlighting the importance of selecting the right type of safety mechanism for the given specifications.