A 200-MVA, 12-kV, 0.85-PF-lagging, 50-Hz, 20-pole, Y-connected water turbine generator has a perunit synchronous reactance of 0.9 and a per-unit armature resistance of 0.1. This generator is operating in parallel with a large power system (infinite bus).
(a) What is the speed of rotation of this generator's shaft?
(b) What is the magnitude of the internal generated voltage EA at rated conditions?
(c) What is the torque angle of the generator at rated conditions?
(d) What are the values of the generator's synchronous reactance and armature resistance in ohms?