Question

The square root of the ratio of the inertia force due to flow to the elastic force of fluid is known as-

• A. Mach number
• B. Strouhal number
• C. Froude number
• D. Reynolds number

Answer 1

Answer:

A. Mach number

Mach number (M) is the square root of the ratio of inertia

$M= \sqrt \frac {Inertia force} {Eiastic force} = \sqrt{\frac{\rho A V ^ 2}{KA}}$=$\sqrt{\frac{V ^ 2}{\frac {K}{\rho}}}$=$\frac{V}{\sqrt{\frac {K}{\rho}}}$ = $\frac VC$

{$\sqrt {\frac{K}{\rho}}=Velocity of sound$}