Question: The parameters which determines the friction factor for turbulent flow in a rough pipe are: ( A ) Froude number and relative roughness ( B

The parameters which determines the friction factor for turbulent flow in a rough pipe are:
(A) Froude number and relative roughness
(B) Froude number and Mach number
(C) Reynolds number and relative roughness.
(D) Mach number and relative roughness

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