A 480-V, 50-Hz, Delta-connected, six-pole synchronous generator has a per-phase synchronous reactance of 1.0. Its full-load armature current is 60 A at 0.8 PF lagging. This generator has friction and windage losses of 1.5 kW and core losses of 1.0 kW at 60 Hz at full load. Since the armature resistance is being ignored, assume that the ²R losses are negligible. The field current has been adjusted so that the terminal voltage is 480 V at no load. The speed of rotation of this generator is r/min. If the terminal voltage of this generator if it is loaded with the rated current at 0.8 PF lagging is 441.6 V, the output power is The mechanical input power is KW. KW The efficiency of the generator is % The input torque to this generator is N.m The induced torque is N.m % The voltage regulation of the generator is