A venturi meter is used to measure air velocity. A one-fifth model of the venturi meter is built, and water is used as the test fluid. Viscosity of air is 1.82x10-5 N. s/m2. Viscosity of water is 9.82 x 10-4 N. s/m2. What will be the approximate ratio of the model to actual velocities observed?

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater