What is the consequence of high resistance in the armature of a DC generator?

High resistance in the armature of a DC generator leads to higher electrical losses primarily due to the increased I²R (current squared times resistance) losses. When the armature experiences high resistance, the current flowing through it generates more heat because some of the electrical energy is transformed into heat energy rather than being utilized for productive work. As a result, this heat dissipates energy that could otherwise contribute to the overall output of the generator, ultimately impacting its effectiveness and functionality.

Additionally, while options related to increased speed and improved efficiency may seem plausible, they do not accurately reflect the impact of high resistance. In fact, high resistance typically hinders performance rather than enhancing it, making the focus on electrical losses due to resistance the primary concern in understanding the consequences of high resistance in the armature.