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why active power is called as real power or working
component.What is the exact function of active, reactive &
apperent power.
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Answer Posted / joseph
In layman's terms, Active Power (expressed as Watt,
Kilowatt etc)is the real power consumed for functioning of
an electrical load (say a Motor). All inductive loads
require to maintain a magnetic field for which some power
is consumed, which is called as Reactive Power. Apparent
Power, expressed in terms of Volt-Ampere (VA) or kilo-volt-
Ampere (KVA) does not have any function but is a
measurement value of cumulative power consumption of Active
Power and Reactive Power. The higher the reactive power
consumption of a load, larger would be the difference
between the kW and KVA. This ratio is called as Power
Factor. For example in case of a load of 100 kW and its
measured apparent power of 120 KVA, the Power Factor is
about 0.83. In case reactive power compensation is
provided through capacitors, the power factor can be
improved to Unity (1.00), wherein the Active Power and
Apparent Power would be the same.
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