(Solved): Figure shows a single line diagram of a three-phase 50Hz synchronous generator connected through ...

Figure shows a single line diagram of a three-phase $50\mathrm{Hz}$ synchronous generator connected through a transformer and a parallel transmission lines to an infinite bus. All reactances are marked in pu on a common base. It the intinite bus receives 1.0 pu real power at $0.9\mathrm{pf}$ lagging, determine (a) Internal voltage of generator (b) The equation for the electrical power delivered by the generator versus its power angle. (power angle equation)