Fluid Mechanics

Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f₁ and that for smooth pipe is f₂. Pick out the correct statement.

  • A. f₁ = f₂
  • B. f₁ < f₂
  • C. f₁ > f₂
  • D. Data not sufficient to relate f₁ & f₂
Answer: Option C.

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