Question

Which one of the following is correct?

a.

the frictional resistance depends on the nature of the surface area of contact

b.

the frictional resistance is independent of the nature of the surface area of contact

c.

the frictional resistance depends on the nature of the surface area of contact for laminar flows but is independent of the nature of the surface area of contact for turbulent flows

d.

the frictional resistance is independent of the nature of the surface area of contact for laminar flows but depends on the nature of the surface area of contact for turbulent flows

Posted under Flow Through Pipes Fluid Mechanics

Answer: (d).the frictional resistance is independent of the nature of the surface area of contact for laminar flows but depends on the nature of the surface area of contact for turbulent flows

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