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Education and Career Forum
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| 25th March 2013 12:14 AM | |
| Unregistered |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? How actually active & reactive power affect the power system?? |
| 22nd March 2013 11:29 PM | |
| Unregistered |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? IS VARIABLE RHEOSTATS OFFER INDUCTANCE WHEN CONNECTED IN SERIES OR PARALLEL? |
| 26th February 2013 07:08 PM | |
| Unregistered |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? if reactive power is provided through capacitor, then will active power increase or decrease? |
| 10th October 2012 04:44 PM | |
| Unregistered |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? diff. btw real,reactive and apparant power..? |
| 6th September 2012 09:49 PM | |
| Unregistered |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? impedance & admittance difference |
| 27th June 2012 07:46 PM | |
| Unregistered |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? If i want to purchase one transformer then what i should write to the seller? |
| 1st September 2011 07:04 PM | |
| tanmayeetripathy |
Re: Difference between Active Power and Reactive Power? What is the relationship between them? Hi, consider an ideal alternating current (ac) circuit consisting of a source and a generalized load, where both the current and voltage are sinusoidal. If the load is purely resistive, the two quantities reverse their polarity at the same time, the direction of energy flow does not reverse, and only real power flows. If the load is purely reactive, then the voltage and current are 90 degrees out of phase and there is no net power flow. This energy flowing backwards and forwards is known as reactive power. Important terms used:- real power (p) [unit: W] reactive power (q) [unit: Var] complex power (s) apparent power (|s|) [unit: Va]: I.e. The absolute value of complex power s. Q=v*i*sin@ but sin@=x/z so q=v*i*x/z agian v/z=i so q=i(sqr)x since there is no any power loss when current flows through the pure inductor or capacitor, but the energy is stored in the form of magnetic field(in inductor) or static field (in capacitor). So the reactive power is the power used for magnetizing or is stored in capacitor in the form of static field. Simillarly p=v*i*cos@ but cos@=r/z so p=v*i*r/z also v/z=i so p=i(sqr)r this is the formula for heat loss in the system. Actully no any system is loss less. So active power is the power that is lost in the form of heat in the systeor we can say active is the power used in the system to compensate for loss. Hope this helps.. |
| 1st September 2011 01:18 PM | |
| Unregistered |
Difference between Active Power and Reactive Power? What is the relationship between them? what is difference between "ACTIVE POWER" and "REACTIVE POWER"? what is the relationship between them? |
