question_answer

The cavitation number of any fluid machineryis defined as \[\sigma =\frac{p-p'}{p{{v}^{2}}/2}\] (p is absolute pressure, \[\rho \]is density and v is free stream velocity) The symbol p? denotes:

A) Static pressure of fluid

B) Dynamic pressure of fluid

C) vapour pressure of fluid

D) Shear stress of fluid.