The equalizer circuit shares load among DC generators. This is most closely described as:

• A. Increases the voltage of the system
• B. Providing overload protection
• C. Smoothing output current
• D. Sharing the load evenly among DC generators

Answer: (D)

Balancing current among generators connected in parallel is what the equalizer does. When several DC generators feed the same bus, slight differences in their voltage can cause one unit to carry more of the load. The equalizer circuit senses the outputs and adjusts each generator’s excitation (or governor action) so that the currents share roughly equally, preventing any single unit from being overloaded. This function keeps the workload distributed and helps protect the generators from uneven wear. It doesn’t inherently raise the system voltage, and it isn’t a protective device for overloads or a smoothing filter for the output. So describing it as sharing the load evenly among DC generators is the best fit.