Question

A pitot tube is used to measure the velocity of gasoline flowing in a pipe. The estimation of the velocity is given by the equation in which vi is the local velocity at location 1, pthe density of the liquid, pr the total pressure measured by the tube, and pi the static pressure at location 1. The density is estimated to be 680 50 kg/m3 (P 0.95, 0 bias). (i) Assume that the two pressures are measured separately using individual pressure gages: pr 102 t 1 kPa (P 0.95, 0 bias), pi 95 t 1 kPa (P 0.95, 0 bias). Estimate the uncertainty for v ( Assume that the pressure difference pr-pi is measured using a single differential pressure 7t 1 kPa (P 0.95, 0 bias). Estimate the uncertainty for vi gage: pr p Which arrangement, (a) or (b), is preferable and why?

Answer 1

given chla Shain hadeパng exponent,n=01 34 г at (et) 0.22 0-02 41l 0.22 £t 0.044 32 ke CiS-817 Le