Comments on: How to illustrate “Re active Power” ?

By: sai krishna

sai krishna — Sun, 30 Oct 2011 06:20:09 +0000

k its very good explantation ,but i cant come to point that tell me if a gernator produce 10 mw how u will differ active apperent and reactive power plz give me a proper explanations

By: Gail Dobson

Gail Dobson — Tue, 30 Aug 2011 04:35:31 +0000

I have to agree with David C. Reactive power is every bit as important. However your illustration is amusing and does help people to understand the two types of energy.
Gail

By: Jim

Jim — Fri, 26 Aug 2011 21:58:44 +0000

Great explanation. The foam in the beer comparison is ace!

By: David C

David C — Mon, 28 Mar 2011 22:35:02 +0000

Reactive power is the energy that is transmitted from the generator to the load and is then returned to the generator every half cycle. It is not the froth on the beer , it is real beer, it is just that it is left in the glass. An appliance that consists of a magnetic circuit requires a certain energy to magnetise and de-magnetise the magnetic circuit in each half cycle. That energy is stored in the magnetic circuit but not converted in another form of energy. When the direction of the voltage in the circuit is reversed, the next half cycle, the energy is returned to the generator and then returned back to the load in the opposite direction to magnetise the circuit in the opposite direction. And so the cycle continues.
The reactive power (energy) is therefore not less real that the power that is being converted into another form of energy (mechanical power etc) it is just power that does not get use by the load.

By: Jayajith

Jayajith — Wed, 08 Dec 2010 11:42:02 +0000

Superb Explanation……….. No Need of any traditional explanations

By: ABDUL

ABDUL — Mon, 16 Aug 2010 13:14:06 +0000

This is interesting,I believe it requires no further explanation,even to a primary school child!

By: mehul patel

mehul patel — Tue, 27 Jul 2010 20:13:23 +0000

This is one of good lesson with great example

By: Sivakumar

Sivakumar — Thu, 17 Jun 2010 02:22:25 +0000

Super! Its way to understand everyone easily. I need to know KVA calculation.

By: vaithiyanathan

vaithiyanathan — Thu, 04 Feb 2010 15:31:44 +0000

nice explanation…everyone can understand easily..
who donot hv electrical knowledge also……thank u

By: ramakrushna

ramakrushna — Sun, 10 Jan 2010 08:00:05 +0000

easiest way to understand the difference between active & reactive power