Power in an electric circuit is the rate of flow of energy past a given point of the circuit.
In alternating current circuits, energy storage elements such as inductors and capacitors may result in periodic reversals of the direction of energy flow.The portion of power that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction is known as active power (sometimes also called real power). The portion of power due to stored energy, which returns to the source in each cycle, is known as reactive power.Źródło: https://en.wikipedia.org/wiki/AC_power
Isolated executed electrical installations can make later, at the stage of operational problems arise, for example, through the inclusion of too many devices to the power supply circuit may occur.
Therefore, many specialists in the repair of electrical installations must also have knowledge of writing programs that respectively pokierowałyby machine operations.Nowadays, more and more equipment is armed with complex electrical components, which must be assigned the appropriate settings, so that the whole system to function smoothly..