Apparent and Power Factor

APPARENT POWER
(active + reactive)

Apparent power is a power which is easy to identify, easy to see or to know. Not literally that we see but we can measure the power.
Apparent power is a measure of alternating current (AC) power that is computed by multiplying the root-mean-square (rms) current by the root-mean-square voltage. In a direct current (DC) circuit, or in an AC circuit whose impedance is a pure resistance, the voltage and current are in phase.
Apparent power is measured in units’ volt-ampere (VA).
Apparent power symbol by/represented by “S”.

POWER FACTOR

Power factor is defined as the ratio of real power (P) to apparent power (S). This definition is often mathematically represented as kW/kVA, where the numerator is the active (real) power and the denominator is the (active+ reactive) apparent power or simply PF = P/S

or

PF = cos angle of PF= cos angle of(angle of voltage -angle of current)

In sinusoid, PF is cosine of the phase difference between the voltage and current.

In  this topic, I find apparent power easy to solve for a reason that it is easy to found/measure. Apparent will be divided into two power which is the reactive and real power that has their own function.