Tech A states that a recall is carried forward in case an issue in servicing is reported. Tech B states that recalls are usually conducted by manufacturers when a safety issue is discovered with a particular vehicle. Who is correct? Select one: a. Tech A b. Tech B c. Both A and B d. Neither A nor B​

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