3. A salient-pole generator without dampers is rated 20 MVA, 13.8kV and has a direct-axis subtransient reactance, negative sequence reactance, and zero sequence reactance 0.2, 0.3 and 0.10 per unit, respectively. The neutral of the generator is grounded through a neutral reactance 0.05 per unit. Determine the subtransient current in the generator and the line-to-line voltages for subtransient condition when a line to line fault occurs at the terminals b and c of the generator. Assume generator is operating unloaded at rated voltage. Neglect resistance.