For the bernoulli obstruction-type meter shown below, a) show how continuity and the bernoulli equation can be used to estimate the flow rate through the expression /2 ( 2(p1-p2) / b) explain why this equation does not give the exact q found in reality, and why a discharge coefficient, cd, is needed. c) why does the venturi tube device give a better prediction of q when using the expression given above (in eq. 1) horizontal egl moody loss pi-p2 hgl nonrecoverable head loss vena contracta d2 d. dividing streamline region problem 1: flow through a generalized bernoulli obstruction-type meter