Which of the following parameters is used to determine the efficiency of power usage?

The efficiency of power usage is best determined by the power factor. Power factor is a measure of how effectively electrical power is being converted into useful work output. It is defined as the ratio of real power (the power that actually performs work) to apparent power (the total power flowing in the circuit). A power factor close to 1 indicates that most of the power is being effectively utilized for productive work, whereas a lower power factor signifies that a portion of the power is wasted and not used for productive purposes.

When assessing the efficiency in power systems, the power factor plays a crucial role because it takes into account the phase relationship between voltage and current, which affects the total power being consumed. This parameter provides insight into how well electrical systems operate and can help identify areas where improvements can be made to reduce waste and enhance performance.

Other parameters, while important for various electrical analyses, do not directly measure the overall efficiency of power usage in the same way. Voltage indicates the electric potential and is essential for understanding how much energy is available, but it does not correlate directly with efficiency. Frequency is related to the oscillations in power systems but does not directly measure how effectively the power is being used. Phase sequence deals with the order of phases in three-phase systems