Two machines and a lighting load are connected in parallel to a 220 V, 60 Hz line. The first machine uses 310 kW of power at 81.6% power factor lagging. The second machine uses 85 kVA at 72.3% power factor leading. The lighting load consumes 55 kW. (a) Sketch and label a power triangle for each of the three devices. (b) Sketch and label a power triangle for the combined loads. (c) What is the current in the line feeding the three loads

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