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Power Factor
Power Factor is a core engineering term. Definition, usage notes, and a practical example.
Definition
Power factor is the ratio of real power to apparent power.
Why it matters
It is used in AC motor and facility power quality calculations.
How it is used
In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.
Power factor = real power / apparent power
Example
Low power factor can require higher current for the same real power.
Related calculators and resources
Formulas
Power factor = real power / apparent power