Question #126587

A series generator is operating in the linear region where the flux is directly proportional to the armature current. The armature resistance is 80 mΩ, and the series field-winding resistance is 20 mΩ. At a speed of 1200 rpm, the terminal voltage is 75 V and the armature current is 20 A. What must be the armature current for a terminal voltage of 120 V at 1200 rpm? If it is required to have a terminal voltage of 100 V at an armature current of 25 A, what must be the armature speed?

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