Which of the following meters are pressure differential devices?

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Question restatement: Which of the following meters are pressure differential devices?

Option d: Venturi tube
- A Venturi tube functions as a differential pressure device because it narrows a flowing stream, causing a drop in pressure between the wide section and the throat. By measuring this pressure difference, we can infer the flow rate using principles from Bernoulli’s equation converted for a constriction. This is a classic differential pressure (DP) flow meter arrangement.

Option e: Orifice plate
- An orifice plate is another quintessential differential pressure device. It introduces a sharp restriction in the flow, creating a distinct high-pressure region upstream and a lower-pressure region downstream. The pressure drop across the plate is proportional to the flow rate, allowing measurement via differential pressure.

If we consider other possible meters (not listed here), some devices do not fit the strict definition of a pressure differential meter. For example, a Pitot tube measures stagnation pressure to compute velocity; it is not typically categorized as a DP meter for flow rate in the same sense as Venturi or orifice configurations. It provides a dynamic pressure reading rather than a differential pressure across a single flow restriction used to compute flow directly.

In summary, both Venturi tubes and orifice plates operate on the DP principle: they create a measurable pressure difference that can be translated into flow rate. The reasoning hinges on the relationship between flow, cross-sectional area changes, and pressure via fluid dynamics.

BH40A1401 Fluid Mechanics I - Lähiopetus 8.1.2024-23.2.2024 Quiz 4

Which of the following meters are pressure differential devices?

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BH40A1401 Fluid Mechanics I - Lähiopetus 8.1.2024-23.2.2024 Quiz 4

Which of the following meters are pressure differential devices?

查看解析

登录即可查看完整答案

类似问题

M1Q6 Which of the following statement relative to the throated flumes is correct?

Which of the following statements are correct?

Are the following devices used to measure flow velocity, or volumetric flow rate? 1: Hot wire anemometer ____ 2: Laser Doppler anemometer ____ 3: Vortex meter ____ 4: Rotameter ____ 5: Filling a vessel ____ 6: Pitot-pipe ____ 7: Venturi tube ____ 8: Particle Image Velocimetry (PIV) ____

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

更多留学生实用工具

希望你的学习变得更简单

Are the following devices used to measure flow velocity, or volumetric flow rate? 1: Hot wire anemometer 2: Laser Doppler anemometer 3: Vortex meter 4: Rotameter 5: Filling a vessel 6: Pitot-pipe 7: Venturi tube 8: Particle Image Velocimetry (PIV)