Section: Fluid Mechanics | Type: NAT | Marks: 2
Water flows through a pipe of diameter 20 cm at a flow rate of 0.025 m3/s. A pitot- static tube is placed at the centre of the pipe and indicates the pressure difference of 5 cm of water column. Theoretical velocity measured through pitot-static tube when multiplied with velocity coefficient πΆπ gives the actual velocity of the flow. If the mean velocity in the pipe is 90% of the actual velocity at the centre of the pipe and the gravitational acceleration is 10 m/s2, the value of πΆπ (rounded off to 2 decimal places) is ________
Answer: 0.85 to 0.90