5-15. A 100-MVA 11.5-kV 0.8-PF-lagging 50-Hz two-pole Y-connected synchronous generator has a per-unit synchronous reactance of 0.8 and a per-unit armature resistance of 0.012.
(a) What are its synchronous reactance and armature resistance in ohms?
(b) What is the magnitude of the internal generated voltage EA at the rated conditions? What is its torque angle δ at these conditions?
(c) Ignoring losses in this generator, what torque must be applied to its shaft by the prime mover at full load?
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