Which elements are included in air supply system tests?

• A. Pressure, governor settings, and leakage
• B. Electrical resistance checks
• C. Temperature stability checks
• D. Noise level measurements

Answer: (A)

Air supply system tests focus on confirming the system maintains the correct pressure, that the pressure control (governor) is set to the proper output, and that there are no leaks that would let pressure drop. Checking pressure verifies the system can deliver the required flow under operating conditions. Verifying the governor settings ensures the regulator maintains the specified output rather than allowing over- or under-pressurization that could affect performance or safety. Conducting a leakage test identifies any path for air loss through fittings, hoses, valves, or seals, which would compromise performance and indicate maintenance needs. Electrical resistance, temperature stability, or noise level measurements aren’t standard parts of air supply system testing, as they pertain to electrical components, thermal behavior, or acoustic factors rather than the pneumatic path and its primary function.