A 4-pole, lap connected D.C. machine has 540 armature conductors. If the flux per pole is 0.03 Wb and runs at 1500 r.p.m, determine the e.m.f. generated. If this machine is driven as a shunt generator with the same field flux and speed, calculate the terminal voltage when it supplies a load resistance of 40 O. Given armature resistance as 2 O and shunt field circuit resistance as 450 O . Also find the load current.