Answer / e.e

Active power means the power required for the heating and
rotating machines.
Reactive power means power required for building electric
and magnetic field.
kVA is apparent power(S), it consist of reactive power (Q
in var volt ampere reactive)))(for building electric and
magnetic fields) and active (P in W watts))(working power-
for heating, rotating machines,etc ) it is also thru that
S² = P² + Q².

Answer / karthikeyan

Active Power is the one which is utilised by the inductive
loads to produce useful torque and work. Reactive power is
the one which is being used to magnetise the Inductive load
and once its job over it will return back to the source.In
this occasion only harmonics are produced with fundamental
sine waves. and there is no useful work done by this
magnetising current so to make use of this wastefull
current we introduce the static capacitors near the
Inductive loads to produce leading reactive power.To
compansate this reactive power one should supply the active
power to equal amount of reactive power to the system.

Answer / ashishhans

Reactive power is utilised in inductive or capacitiance
ciruits but does not produce real work. It is expressed as
Q and is given by
P=VIcos phie


Active power:
The time rate of energy per second is power. Basic unit of
power is watt power for one second requires 1 joule energy

practical unit is kw and 1kw=1000watt

Answer / vinay

we generally classify losses as resistive and reactive losses
1.we know resistance of a material is its characteristic which indicates how efficiently a material can conduct electrons
->there fore now we can say a certain portion of energy has to be spent to over come this resistance hence called resistive loss.
now any electric equipment we use will just convert electric energy to required form say mechanical in case of motor,heat in case of heater etc.,
now if the equipment used involves in reactive components say inductance or capacitance
we know a magnetic field will build up around a conductor carrying electricity
similar to resistance in case of electricity we have term magnetic permiability which indicates how efficiently a medium can carry magnetic field
now for building up of magnetic field around a conductor certain amount of power should be spent to over come magnetic resistance of medium mostly air..

-->now active power is the sum power which is used to produce real work and power consumed for resistive losses
-->and reactive power is power which is used to set up the magnetic field,electric field that power required for compensating magnetic losses which are predominant in inductive load........

Answer / ram

active power is the one which is utilized by the heating,but
reactive power will frm magnetic induction,impudence

Answer / iyappan

active power is used to conversion of energy

reactive power is used for compensating losses

Answer / s.kodhandan

Active power Example.Generater because this one produce the
electrical power

Reactive power Example.motor receive the electrical power &
it gives the load through drivers

Answer / karthi

active power is cosumed by the load.
reactive power is loss.

give single line diagram of D.G distribution form alternator to main L.T panel?

0 Answers  

ful form of gis

2 Answers   ABB,

why we step/down voltage in multipul of 11kv?

4 Answers   Siemens,

i want the formula of total eletical knowledgement

1 Answers  

if a 3 point starter is not available, how can a dc motor be started?

3 Answers   Accenture, BIT, Techno Solutions,

what is impedance of transformer?

7 Answers   Synergy, Vijai Electricals,

what is meant by neutral Ct of a transformer and how it connected in transformer

4 Answers  

what happen when transformer connect on dc supply.

5 Answers  

for distribution line ratio of x/r 1.<0.1 2.>10 3.>1 4.<0.01

3 Answers   HAL, HPPSC,

Why capacitor bank is not neccessery to switch on,pls answ me with formula

2 Answers  

What will be the effect of in HT XLPE 220 KV cable when one side of the Armour/cable ends are not grounded. Will there is difference between 3-phase voltages? like: if A. Both End of Cable grounded Phase Voltages:- V1=219 KV, v2=220 Kv, v3=220 KV. B. One End is grounded other is not: than Impact on Phase Voltages:- V1= KV, v2= Kv, v3= KV. Remain same or unchanged??

3 Answers   Jamshoro,

Formulae for calculating the transmission line losses for different voltage levels

0 Answers