A three-phase steam-turbine synchronous generator is connected to an infinite bus. The generator excitation current is IF=1000 A at the time of synchronization with the bus. The generator has a synchronous reactance of Xs =1.5 per unit. With IF unchanged, the steam valves at the turbine are adjusted until the generator delivers an active power of Pg=0.2 per unit. Assuming the infinite bus is the reference voltage (Vt=1 at angle 0),

a)Find the generator load current

b)With the Pg unchanged, the excitation current is increased to 1600 A. Find the new load current.