Flow occurs between two connected points in a pneumatic system when ______.

Flow occurs between two connected points in a pneumatic system when ______.

• A. A pressure differential exists
• B. Humidity difference exists
• C. Same pressure everywhere
• D. Temperature difference exists

Answer: (A)

Flow between two connected points in a pneumatic system is driven by a pressure difference. When one point has higher pressure than another, air is pushed from the high-pressure area toward the low-pressure area, causing flow through hoses and components. This driving force continues until pressures equalize or a control device stops it. Humidity differences or temperature differences can affect air properties, but they don’t establish a sustained flow by themselves. If pressures are the same everywhere, there’s no net movement. Thus, a pressure differential explains why flow occurs.

Flow between two connected points in a pneumatic system is driven by a pressure difference. When one point has higher pressure than another, air is pushed from the high-pressure area toward the low-pressure area, causing flow through hoses and components. This driving force continues until pressures equalize or a control device stops it. Humidity differences or temperature differences can affect air properties, but they don’t establish a sustained flow by themselves. If pressures are the same everywhere, there’s no net movement. Thus, a pressure differential explains why flow occurs.