A10 mm-thick plate is decreased in thickness according to the following schedule: 5mm, 2mm, 1mm. calculate the total strain; . once on the basis of initial and final dimensions and • once as the summation of the incremental strains, using: a. conventional strain and b. true strain. compare the results and comment on the significance of the differences.

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