$2.$ A $30$kVA $10$kV$/0\mathrm{.}525$kV$,50$Hz$,$ star$-$star $($Y$-$Y$)$ connected three phasetransformer has the following parameters for each phase:R$1=43\mathrm{.}2,$ X$1=46\mathrm{.}9,$ R$2=0\mathrm{.}12,$ X$2=0\mathrm{.}125.$ Each phase is loaded bya load impedance of $8\mathrm{.}84$ with the power factor of $0\mathrm{.}8.$a$.$ By using the simplest equivalent circuit, calculate the primary andsecondary currents, the input power factor, the induced voltage. Findthe apparent, the active and the reactive powers both for the primaryand the secondary$.$b$.$ If the primary side no$-$load current $($I$10)$ and core loss current $($I$1$FE$)$ are$80$mA and $11\mathrm{.}5$mA$,$ respectively, by using the L$-$equivalent circuitrecalculate all the parameters in part $($a$).$