A venturi meter measures quantity of fluid by

A venturi meter measures quantity of fluid by

• A. Electronic Measurement
• B. Weight Of The Fluid
• C. Difference In Pressure Between A Constricted And A Full-Size Portion
• D. Velocity Of The Fluid Past A Given Point

Answer: (C)

Venturi meters rely on a drop in static pressure caused by speeding fluid through a narrow throat. As the fluid enters the constricted section, its velocity increases and the static pressure decreases. By measuring the pressure difference between the upstream (full-size) section and the throat, you obtain a signal that is directly related to the flow rate. With the known pipe geometry and fluid density, this differential pressure can be used to calculate how much fluid is moving per unit time. The instrument does not directly measure electronic signals or the weight of the fluid, and while velocity is connected to the reading, the device’s primary measurement is the pressure difference across the constriction.

Venturi meters rely on a drop in static pressure caused by speeding fluid through a narrow throat. As the fluid enters the constricted section, its velocity increases and the static pressure decreases. By measuring the pressure difference between the upstream (full-size) section and the throat, you obtain a signal that is directly related to the flow rate. With the known pipe geometry and fluid density, this differential pressure can be used to calculate how much fluid is moving per unit time. The instrument does not directly measure electronic signals or the weight of the fluid, and while velocity is connected to the reading, the device’s primary measurement is the pressure difference across the constriction.