A 1.2 MVA, 1800 r/min, 6.6 kV, 60 Hz, 3-phase generator delivers rated current to an infinite bus at unity power factor. The synchronous reactance is 1.0 per unit, based on its own rating. The open-circuit characteristic in the operating region is given by Vf = 100 + 65If. What is the excitation voltage and the torque angle?