Manitoba Airbrake Practice Exam

Unusual noise may not necessarily indicate that an air tank or mounting bracket is not secure. It could be attributed to other factors such as road conditions or engine issues. Leakage of air could be a sign of a faulty valve or seal, but it does not necessarily mean that the tank or bracket is not secure. Rust formation could indicate potential damage to the tank or bracket, but it does not necessarily mean that it is not secure. It could still be securely attached despite the presence of rust. Unusual movement, on the other hand, can be a clear indication that the tank or bracket is not securely attached. This could lead to further damage or even accidents if not addressed promptly. Therefore, unusual movement is the best indicator that an air tank or mounting bracket is not secure.