Question #4 The reactance diagram of a portion of a power system is shown in Fig. 6-19. The line-to-ground source voltage is 1.0 pu, and a line-to-ground fault occurs at P. Determine the per-unit currents in the two portions of transmission line B. Line A 0.5 pu ை 0.1 pu 002 Load current 0 V₁ = 1.0 pu 0.2 pu √002 0.3 pu Line B Ans. 3.077 pu; 0.769 pu Fig. 6-19.