(Solved): Problem 4: (26 pts) Given the per unit equivalent circuit below, which was calculated using \( \mat ...

Problem 4: (26 pts) Given the per unit equivalent circuit below, which was calculated using \( \mathrm{S}_{\text {base }}=100 \mathrm{MVA}, \mathrm{V}_{\mathrm{B} 1}=230 \mathrm{kV} \mathrm{LL} \) (on the left of transformer) and \( \mathrm{V}_{\mathrm{B} 2}=13.2 \mathrm{kV}_{\mathrm{LL}} \) (a) Calculate \( \mathrm{I}_{\mathrm{a}} \) and \( \mathrm{V}_{\mathrm{s}} \) in per unit if the load voltage is 1.0pu at 0 degrees. (b) Calculate the percent voltage regulation of the circuit. (c) Calculate \( \mathrm{P}_{\text {load }} \) and \( \mathrm{Q}_{\text {load }} \) in per unit and in MVA. (d) Calculate the line-to-neutral source voltage in \( \mathrm{kV} \) and the source current in \( \mathrm{A} \). (e) Determine the capacitive reactance (in per unit) that needs to be added to make the load unity power factor