The differential pressure created by an orifice plate is related to flow through which principle?

The differential pressure created by an orifice plate is related to flow through which principle?

• A. Bernoulli-based relationships using pressure drop, fluid density, and geometry
• B. Ohm's law using current and resistance
• C. Charles' law relating volume and temperature
• D. Hooke's law relating force and spring constant

Answer: (A)

The differential pressure across an orifice plate is interpreted using Bernoulli-based relationships that tie pressure drop to flow through the fluid’s density and the orifice geometry. When fluid flows through the restriction, it speeds up to conserve mass, and according to Bernoulli’s principle, the pressure decreases as velocity increases. The measured ΔP across the plate is therefore related to how much fluid is moving, with the relationship depending on the fluid density and the opening’s size and shape (often summarized with a discharge coefficient). In incompressible flow, this links to flow rate in a way that ΔP grows with the square of the flow rate, scaled by density and geometry. This approach is specific to fluid energy conservation, not electrical behavior or gas-temperature/elastic laws.

The differential pressure across an orifice plate is interpreted using Bernoulli-based relationships that tie pressure drop to flow through the fluid’s density and the orifice geometry. When fluid flows through the restriction, it speeds up to conserve mass, and according to Bernoulli’s principle, the pressure decreases as velocity increases. The measured ΔP across the plate is therefore related to how much fluid is moving, with the relationship depending on the fluid density and the opening’s size and shape (often summarized with a discharge coefficient). In incompressible flow, this links to flow rate in a way that ΔP grows with the square of the flow rate, scaled by density and geometry. This approach is specific to fluid energy conservation, not electrical behavior or gas-temperature/elastic laws.