Exam Question

A 4-pole lap wound D.C shunt generator has an open e.m.f of 250V when the flux per pole is 0.08 Wb and the speed is 10 rev/sec/ The speed of the generator is reduced to 10% and the flux per pole is increased by 5% when the generator supplies a load of 100A. Determine the terminal voltage, if the armature resistance is 0.06Ω and the new total field circuit resistance is 200Ω. (16)