Section: Fluid Mechanics | Marks: 2
The velocity of an air stream is 20 m/s. The densities of mercury and air are 13600 kg/m3 and 1.2 kg/m3, respectively. The gravitational acceleration may be taken as 10 m/s2. When a Pitot-static tube is placed in the stream, assuming the flow to be incompressible and frictionless, the difference between the stagnation and static pressure in the flow field (in mm Hg) would approximately be
- A. 1760
- B. 1.76
- C. 0.57
- D. 0.57 × 10–5
Answer: B. 1.76