A pipe that appears to be of uniform size has constrictions on the inside. When a liquid flows through the pipe, the pressures at various points are indicated by the heights of the columns in the manometer tubes. If fluid friction is negligible, at which point is the diameter greatest?

Question

Quizplus · Accepted Answer

According to Bernoulli's equation, as the diameter of the pipe decreases, the fluid velocity increases, and the pressure decreases. Therefore, the point with the highest pressure would have the largest diameter. In this case, point 2 has the highest pressure, so the diameter is greatest at point 2.

A Pipe That Appears to Be of Uniform Size Has