what is meant by real power,active power,reactive power &
apprent power ?please explain it?

Answer Posted / raghavendran

Real power refers to the power that is available to the load
or in other words a power is presently being generated.It
depends upon the load power factor.

Apparent power is the maximum power which, a source is
capable of generating at unity power factor.
for Ex : sqrt3* V*I*COS(phi)keeping v = 20 kv and I=20000A
and COS(phi)= 1
we get Apparent power = 692 MVA
where as for COS(phi)= .85 we get 588 kw which is real power

reactive power is something which is not consumed by the
load.It is available circulating in the grid
always.Depending upon the load connected,it is either
rejected into the grid or absorbed in.

Is This Answer Correct ?    7 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what material is the electrical housing wire made of? is there any difference for the telephone lines?

1484


how you will decide the distance between the power transformer and its fencing

1470


In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

728


How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.

2055


any application of back emf

1633






What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?

688


can we synchronize star system generators with delta system generators?

1467


Why are iron cores in transformers made laminated?

679


As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

3095


When we giving the 3 phase supply to ups system how to coming netural?

1658


What is vacuum circuit breaker.define with cause and where be use it device?

742


What is industrial plc

1317


Explain about p.t?

677


why single CT used in DOL starter power circuit?

2074


i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection

1446