A 120 mw , 25 kv , 50 - hz , 4 - pole , 0.85 power factor lagging , star - connected synchronous generator . this generator has a synchronous reactance of 3.0 2 and armature resistance of 0.9 0 . calculate : the speed of rotation , generator current , internal generated voltage . maximum generated active and reactive power in term of angle delta . angle delta at which the generated power equal nominal ( 100 mw ) .