Two identical 500-turn coils are wound on the same magnetic core. A current changing at the rate of 2000 Amperes/second in coil 1 induces a voltage of 20 volts in coil 2.
a. What is the mutual inductance of this arrangement?
b. What is the self inductance of each coil?

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