How armature does affects the out put voltage in separately excited dc generator?

In a separately excited DC generator, the armature's performance directly influences the output voltage. When the armature rotates in the magnetic field, it induces voltage proportional to the speed of rotation and the strength of the magnetic field. If the armature carries a load or experiences increased resistance, it can lead to a voltage drop due to armature reaction and losses, thereby reducing the output voltage. Conversely, if the load decreases, the output voltage can rise, assuming the field strength remains constant.