Example$-10$: In a balanced three phase system, the line voltage on the load side isVAB$=400$ V rms $($assume $0$ phase$).$ The line impedances is $1+$j$0\mathrm{.}5.$ The Delta connectedload is rated $50$kW at pf$=0\mathrm{.}8$ lagging.$(1)$ Find the current in the delta connected load: $,,$ and $($in polar form$).(2)$ Find the line currents: $,,$ and $($also in polar form$).(3)$ The total average power consumed by the transmission lines.$(4)$ What is the impedance of the delta connected load?