A55 mva, 40 kv, y connected synchronous generator has a synchronous reactance of 9ω/phase and negligible armature resistance. the generator delivers rated apparent power (mva) at 0.8 power factor lagging to an infinite bus bar at a line to line voltage of 40 kv. determine the generator current in amps.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.