Answer / vinod

I think question is What is the difference between KVA &
KVAR

Ans: KVA is Apparant power-ie. the usefull power while
electrical energy converting in to other energy.
KVAR is the reactive power-ie. electrical power using to
develop the media (flux) for energy conversion.measuring
KVAR is VxIxsinQ
Eg. Induction motor is working principle.
When 3 phase voltage is applied across the stator,a synch.
flux producing in the air gap and voltage inducing in the
rotor, as per Lenz low motor rotates in the same direction
of field.here the flux is the media and the power using for
devoloping the flux is KVAR

Answer / ashwani malhotra

THE DIFF. EXIST IN THE VECTORIAL RELATION.

KVA IS THE ACTUAL POWER SUPPLIED AND THE MULTIPLICATION OF
NO. OF PHASE ,PHASE VOLTAGE AND PHASE CURRENT.

WHEREAS THE KVAR IS THE REACTIVE POWER i.e. the
MULTIPLICATION OF ACTUAL POWER TO THE SIN OF ANGLE BETWEEN
VOLTAGE AND CURRENT.

KVA = 3*V*I
KVAR = 3*V*I*sin@

Answer / eduardo

I think you mean kVAr.h. If so, this is an energy measure.
kVA is a power measure.

respetsed sir, i have applied for section engg and juniour engg for both chennai and tiruvunabthapur boards for electrical deportments . can u suggest what books i have to follow and and also from which sections they r going ask (i mean weightage and what topics i have to cover) for both se and je for both chennai and tiruvunanthapur boards.......

1 Answers  

---

Cummins 750 KVA generator how much disel consumed per hour and how many units generated on 100% full load.

1 Answers  

---

Who we calculate the generator NGR resistant, generator voltage 11 KV ?

2 Answers   ABB,

---

Why the transmision line are 11,33,63,132kv?

10 Answers   Power Grid,

---

what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?

0 Answers  

---

what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

0 Answers  

---

For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?

0 Answers  

---

What is the use of insulation tester and how it is to be used.

2 Answers  

---

Why should The rating of 11 kV DO Fuse is in mulyiple of hundred(200 Amp. 40 Amp, etc) Ampere wheareses the its fuse elemnt has rating in just few Amp (< 12 Amp)? ( Is it jusy beacuse of factor of safty).

1 Answers  

---

Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?

0 Answers   UltraTech,

---

what safety use in electrical panel

3 Answers  

---

Can I use RCCB in moisture control device in a submersible pump.

2 Answers   TATA,

---