Section: Fluid Mechanics | Type: NAT | Marks: 2
Air flows steadily through a channel. The stagnation and static pressures at a point in the flow are measured by a Pitot tube and a wall pressure tap, respectively. The pressure difference is found to be 20 mm Hg. The densities of air, water and mercury, in kg/m3, are 1.18, 1000 and 13600, respectively. The gravitational acceleration is 9.81 m/s2. Determine the air speed in m/s. _____________