GATE Electrical Engineering (EE) 2014 Shift 1 Solved Paper

 A 15 kW, 230 V dc shunt motor has armature circuit resistance of 0.4 Ω and field circuit resistance of 230 Ω. At no load and rated voltage, the motor runs at 1400 rpm and the line current drawn by the motor is 5.A. At full load, the motor draws a line current of 70 A.  Neglect armature reaction. The full load speed of the motor in rpm is______