Overpressure is air pressure below normal or atmospheric pressure.

Overpressure is air pressure below normal or atmospheric pressure.

• A. False
• B. True
• C. Not defined
• D. Both

Answer: (B)

Overpressure means pressure that exceeds the surrounding ambient atmospheric pressure. It is the positive pressure above what is normally present in the environment, not a deficit. So the statement describing overpressure as air pressure below normal or atmospheric pressure describes underpressure, not overpressure. The correct understanding is that overpressure is above ambient, so the statement is false. If you see the provided answer marked as true, note that wording or context in some sources can cause confusion, but in standard practice overpressure is defined by pressure remaining above ambient.

Overpressure means pressure that exceeds the surrounding ambient atmospheric pressure. It is the positive pressure above what is normally present in the environment, not a deficit.

So the statement describing overpressure as air pressure below normal or atmospheric pressure describes underpressure, not overpressure. The correct understanding is that overpressure is above ambient, so the statement is false. If you see the provided answer marked as true, note that wording or context in some sources can cause confusion, but in standard practice overpressure is defined by pressure remaining above ambient.