Which of the following is NOT a function of a generator voltage regulator?

A generator voltage regulator primarily functions to maintain and stabilize the output voltage of the generator within specified limits. This is critical for ensuring that the generator can provide a consistent and reliable power supply to connected loads, as fluctuations in output voltage can lead to equipment damage or erratic operation.

The role of the voltage regulator also includes managing the response to changes in load demand to preserve voltage levels as the power output varies. This is essential but does not extend to controlling the generator's power factor. Power factor relates to how effectively the electrical power is being converted into useful work output and is influenced by the types of loads connected rather than by the voltage regulator itself.

Furthermore, the voltage regulator does not maintain consistent frequency. Frequency stability is usually the responsibility of the generator's rotational speed and the grid connection, if applicable. In systems where generators are used, frequency control usually involves synchronization with other generators and does not fall under the purview of the voltage regulator.

While load distribution is important in power systems, it is typically managed by switchgear and load management systems, rather than by the voltage regulator. The regulator's primary focus, therefore, is solely on output voltage regulation, not the broader management of power factor, frequency, or load distribution.