Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.

Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.
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1 Answer

Answer :

• Real Power: It is the product of voltage, current and power factor i.e. P = V I cos j and basic unit of real power is watt. i.e. Expressed as W or kW. • Apparent power: It is the product of voltage and current. Apparent power = V I and basic unit of apparent power is voltampere. Expressed as VA or KVA. • Reactive Power: It is the product of voltage, current and sine of angle between the voltage and current i.e. Reactive power = voltage X current X sinj or Reactive power = V I sin j and has no other unit but expressed in VAR or KVAR.
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Related questions

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