A 3 phase, 50 Hz synchronous generator is connected to an infinite bus through a transformer and two parallel transmission lines. The input mechanical power to synchronous generator is 0.8 p.u. Grid is consuming a power of 0.8 + j0.4 p.u., generator impedance is 0.25 p.u., transformer impedance is 0.5 p.u. and each transmission line impedance is 0.5 p.u. If the infinite bus voltage is 1∠0 p.u. then, what is the generator voltage load angle? [Figure description (from the worked solution): single-line diagram of a generator (Pm = 0.8, reactance j0.25) feeding a transformer (j0.5) and then two parallel transmission lines (j0.5 each) to the infinite bus 1∠0° p.u., where a load of 0.8 + j0.4 is connected.]
- A. 26.56°
- B. 31.30°
- C. 30°
- D. 60°