Two three-phase generators supply a three-phase load through separate three-phase lines. the load absorbs 30 kw at 0.8 power factor lagging. the line impedance is (1.4 + j1.6) ω per phase between generator g1 and the load, and (0.8+j1) ohm between generator g2 and the load. if generator g1 supplies 15 kw at 0.8 power factor lagging with a terminal voltage of 460 v line-to-line, determine

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?