______ is the pressure at a discharge opening while water is flowing.

______ is the pressure at a discharge opening while water is flowing.

• A. Static Pressure
• B. Residual Pressure
• C. Flow Pressure
• D. Atmospheric Pressure

Answer: (C)

When water is moving, the pressure you measure at the discharge is the flow pressure. It reflects the actual pressure the nozzle experiences while the stream is flowing, including losses from friction, nozzle restrictions, and elevation changes. Static pressure, on the other hand, is the pressure inside the system when no water is flowing. Atmospheric pressure is just the air pressure outside the system. So, the pressure at the discharge opening during active flow is described as flow pressure because it represents the dynamic condition of the flowing water.

When water is moving, the pressure you measure at the discharge is the flow pressure. It reflects the actual pressure the nozzle experiences while the stream is flowing, including losses from friction, nozzle restrictions, and elevation changes. Static pressure, on the other hand, is the pressure inside the system when no water is flowing. Atmospheric pressure is just the air pressure outside the system. So, the pressure at the discharge opening during active flow is described as flow pressure because it represents the dynamic condition of the flowing water.