AFOQT Practice Test

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What does Bernoulli's Principle state about the relationship between fluid speed and pressure?

A faster fluid produces higher pressure

A slower fluid produces lower pressure

As the speed of a fluid increases, its pressure decreases

The correct interpretation of Bernoulli's Principle is that as the speed of a fluid increases, its pressure decreases. This principle arises from the conservation of energy for flowing fluids and is pivotal in understanding fluid dynamics.

In practical terms, Bernoulli's Principle illustrates that in situations where a fluid flows through varying diameters of a pipe or over a surface, the areas where the fluid speeds up correspond to regions of lower pressure. For example, as air flows over an aircraft wing, it must travel faster over the curved top surface compared to the flatter bottom surface, resulting in lower pressure above the wing and allowing the wing to generate lift.

Understanding this relationship is crucial in various applications, such as aerodynamics, hydrodynamics, and engineering systems involving fluid mechanics.

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Speed and pressure are unrelated in fluids

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