A power factor of 100% is also referred to as what?

A power factor of 100% is described as a unity power factor. This term indicates that all the power supplied by the electrical source is being used effectively for performing useful work without any reactive power present. In practical terms, a unity power factor signifies that the voltage and current waveforms are in phase, meaning that all current drawn by the load is being converted into useful work, contributing to the overall efficiency of the electrical system.

The notion of a unity power factor is particularly important in the context of electrical systems, as it implies maximum utilization of electrical energy, minimizing losses associated with reactance and ensuring that the energy supplied aligns closely with the energy consumed. Understanding this concept is key in various applications, especially when it comes to designing and optimizing electrical distribution systems.

In contrast, other terms like maximum power factor, perfect power factor, and optimal power factor may imply high efficiency but do not specifically define the phase alignment condition found at a unity power factor. Thus, while they may suggest effectiveness, they do not capture the precise technical definition as clearly as the term "unity power factor."