FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Debooster valves are used in brake systems primarily to?

1. Increase the pressure

2. Reduce the pressure and release the brakes rapidly

3. Control the temperature

4. Filter the brake fluid

The correct answer is: Reduce the pressure and release the brakes rapidly

Debooster valves are used in brake systems primarily to reduce the pressure and release the brakes rapidly. This is important in emergency situations where the brakes need to be released quickly to prevent accidents. The other options, increasing pressure, controlling temperature, and filtering brake fluid, are not the primary purposes of debooster valves. Increasing pressure would actually make it more difficult to release the brakes, controlling temperature is typically done through other means in a brake system, and filtering brake fluid is the role of other components such as the master cylinder or brake calipers. This makes option B the best choice among the given options.