A balanced three-phase load of 15MVA with a lagging load factor of 0.85 is supplied by a 115 kV. If the line impedance is 50 +j100Ω per phase, determine the following: (a) The line current of the load (b) The power loss due to the line impedance (c) The power factor angle of the load (d) The line-to-neutral voltage at the receiving end (load side). (e) The voltage drop due to the line impedance (f) The line-to-line voltage at the sending end (source side).