A 50 Hz ,132 kv transmission line is 100 km.long and having following distributed r=0.17Ω/km ;L=0.0011 h/km;C=0.0082 µF /Km it is delivering 70Mw power at 0.8 lagging .neglecting the leakage conductance calculate, (a)voltage at sending end (b) currents at sending end (c) sending end power (d)regulation of line (f) efficiency.