Cost of piping in a fluid processing unit (e.g., distillation) of a chemical process plant is about __________ percent of the fixed capital investment.

Question: In case of turbulent flow of fluid through a circular pipe, the
[A].

mean flow velocity is about 0.5 times the maximum velocity.

[B].

velocity profile becomes flatter and flatter with increasing Reynolds number.

[C].

point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius).

[D].

skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Boundary layer separation is caused by the
[A].

reduction of pressure to vapour pressure.

[B].

boundary layer thickness reducing to zero.

[C].

adverse pressure gradient.

[D].

reduction of pressure gradient to zero.

Answer: Option C

Explanation:

No answer description available for this question.