Question

A Pitot tube is used to measure flow veolcity of air at an altitude where the density of air is $0.85kg/m^3.$ If the pitot tube produced a differential pressure of $10kN/m^2$ then the velocity of air is _________ m/sec.

• A. 15.34
• B. 153.4
• C. 1.534
• D. 1534

Answer 1

The correct option is B 153.4

Mean velocity of air,

$v=\sqrt{\left(\frac{2}{\rho }\right)\left(\Delta p\right)}=\sqrt{\frac{2}{0.85}\times 10\times {10}^3}$

$=153.39m/sec$