Exercise 1 A pitot tube is used to measure the mean velocity of high pressure gas in a 0.15 m diameter d=0.15 pipe. At maximum flow rate the mean pitot differential pressure is 250 Pa. Use the data given below to: (a) calculate the mean velocity of the gas at maximum flow rate; (b) estimate the maximum mass flow rate; (c) estimate the Reynolds number at maximum flow; (d) explain why an orifice plate would be suitable to measure the mass flow rate of the gas. Data Density of gas 5.0 kg m Viscosity of gas-5.0 x 105 Pas