Friction factor for fluid flow in pipe does not depend upon the________________?
Correct answer: A. Pipe length
- A. Pipe length
- B. Pipe roughness
- C. Fluid density & viscosity
- D. Mass flow rate of fluid
Explanation
The Darcy friction factor depends on Reynolds number and relative roughness, not directly on pipe length. Pipe length affects the total pressure drop, whereas density, viscosity, flow rate, and roughness can affect the friction factor through Reynolds number or relative roughness.
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