A Venturimeter installed in a pressurized pipe measures discharge by relating the pressure difference to the change in:
Correct answer: A. Cross-sectional area
- A. Cross-sectional area
- B. Pipe elevation
- C. Fluid temperature
- D. Pipe roughness
Explanation
A Venturimeter has a converging section and throat, so the change in area produces a velocity and pressure change that is used to calculate discharge. Elevation and roughness may affect the system, but they are not the operating measurement principle.
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Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
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