All of the following are applications of Bernoulli's effect EXCEPT
Correct answer: D. Vacuum cleaner.
- A. Aerofoil.
- B. Atomizer.
- C. Venturi meter.
- D. Vacuum cleaner.
Explanation
The correct answer is vacuum cleaner. Bernoulli's principle explains how an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or potential energy. An aerofoil, an atomizer, and a venturi meter all utilize this principle to function in their respective ways, creating pressure differences that result in lift, misting, or flow measurement. However, a vacuum cleaner simply creates a vacuum to draw in air and debris, which does not rely on Bernoulli's principle but rather on creating a pressure difference through mechanical means.
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About Bernoulli's Equation
Bernoulli’s equation applies conservation of energy to steady flow of an incompressible, non-viscous fluid along a streamline: pressure, kinetic and gravitational terms have a constant total. It explains pressure-speed changes in narrow pipes, Venturi meters and lift, and differs from continuity because it relates pressure as well as velocity and height.
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