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Power factor is the ratio of real power over apparent power.
In a purely resistive load, real and apparent power are the same, so the power factor is one.
In a reactive load, such as an inductive or capacitative load, however, current lags (for inductive) or leads (for capacitative) the voltage. This phase angle means that, at certain portions or phases of the line cycle, the load is feeding power back into the source. A wattmeter connected would read lower than actual, so the apparent power would be less than the real power, and the power factor would be less than one.
In fact, if the load were truly reactive, such as an ideal inductor or capacitor, the current would lag or lead by 90 degrees phase angle, and the power factor would be zero. Power would still be supplied and used, but the meter would stand still.
Power factor is used to compensate for the "error" in the meter, so that the user can be charged correctly for their true power usage.
Power factor is also used to determine the amount of capacitative or inductive compensation to use on a circuit to correct a poor power factor.
What else can I help you with?
What number is used as a factor in a power?
A base number is used as a factor in a power.
What does in a power the number used as a factor mean?
Numbers with exponents are sometimes referred to as a power. For example, x^4 can be called "x to the fourth power" which means that x is used as a factor four times. So, in a power, the number used as a factor is the base.
What is the number in a power that is used as the factor?
The base
In a power the number used as the factor?
Base
In a power the number used as a factor?
base
What is the purpose of power factor correction?
Power factor correction is a process that has to do with managing the essential traits of electric loads that are used to create a power factor of less than one.
How select the rating of capacitor with respect to KW for improving power factor?
The capacitors must be sized according to the reactive power being used, not the real power being used, to improve power factor.
What is the number or expression in a power that is used as a factor in repeated multiplication?
Base of a power
What is the number in a power that is used as a factor?
colol\the base
What is the term for the number of times a factor is used?
Power
When raised to a power the number that is used as the factor?
Exponent
Can we improve generator power factor for increasing active power?
The 0.8 Power Factor provided by generator manufacturers is not the load power factor, but it is the nominal power factor used to calculate the kW output of an engine to supply the power for a particular alternator kVA output. Alternators are therefore designed to supply their rated kVA at 0.8 lagging power factor.
