In the constricted part of a pipe, fluid
Correct answer: D. Velocity decreases pressure increases
- A. Velocity increases pressure decreases cases
- B. Velocity and pressure increases
- C. Velocity and pressure decreases
- D. Velocity decreases pressure increases
Explanation
According to the principle of continuity and Bernoulli's equation, in the constricted part of a pipe where the diameter decreases, the fluid velocity increases while the pressure decreases. This is because of the conservation of mass and the conservation of energy of the fluid flow
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About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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