Air Brake Practice Test

A sign of a potential air leak in the system can manifest in various ways. Increased braking distance may indicate that air pressure is not being effectively maintained within the system, which can result from leaks causing a lack of sufficient air to power the braking mechanism. This reduced air pressure can compromise the braking efficiency.

Unusual noises coming from the brake system can also point to air leaks. When air escapes from a leak, it can create audible sounds such as hissing or whistling. These noises are often a direct indication that the air pressure is being compromised, which needs immediate attention.

A drop in pressure on the air gauge directly reflects the overall health of the air brake system. If the pressure consistently falls short of the acceptable range, it suggests that air is leaking somewhere in the system, preventing the brakes from functioning effectively.

Recognizing all these indicators is crucial for maintaining safety and operational efficiency in vehicles equipped with air brake systems. Hence, the correct answer encompasses all these signs, highlighting the importance of thorough monitoring of the system.