Physics · Fluid Mechanics
For steady flow in a pipe of constant internal diameter, the hydraulic grade line (HGL) ________.
- 1coincides with the physical centerline of the pipe
- 2is always above the centerline of the pipe for positive pressure✓
- 3is always sloping down in the direction of flow
- 4is always above the total energy grade line
Correct answer
is always above the centerline of the pipe for positive pressure
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