Some generators, called shunt generators, use electromagnets in place of permanent magnets, with the field coils for

Question:

Some generators, called shunt generators, use electromagnets in place of permanent magnets, with the field coils for the electromagnets activated by the induced voltage. The magnet coil is in parallel with the armature coil (it shunts the armature). As shown in Fig. 33-3, a certain shunt generator has an armature resistance of 0.060 Ω and a shunt resistance of 100 Ω. What power is developed in the armature when it delivers 40 kW at 250 V to an external circuit? Armature 0.060 92 llllll Field 100 92 Fig. 33-3 250 V 40 kW