Answer / manoj kumar

for single phase it is-
average voltage x average amp. x power factor (0.85)
____________________________________________________
1000
for three phase it is-

average voltage x average amp. x power factor (0.85) x 1.732
____________________________________________________________
1000

Answer / ram kumar pandey

For single phase
kW = V*I*cosQ/1000
For three phase
kW = 1.732*V*I*CosQ/1000

Answer / p l narayana

KW is an electrical specification that which intends the
amount of energy required to do a job
The given example will give an idea to calculate KW
10KG object is to move one meter distance in one
section then required kw is =weight*g*d/(t*1000) KW in
mechanical terms
Now in electrical terms
KW=V*I*PF
= 3^0.5*V*I*PF
WHERE V=Phase voltage
I=Phase current
PF=Power factor

Answer / arunkumar.s

Normally Voltage & Current Vil b Given,

Kw = V*i*Power Factor ( only Single Phase )

Kw = 1.73*V*I*Power factor ( only Three Phase )

Then, KVA vil b Given,

KW = KVA*Powerfactor ( Both single & Three Phase )

Answer / arun kumar.s

Voltage & Current vil b Given,

KW = (V*I*Powerfactor)/1000 ( only Single Phase )

KW = (1.732*V*I*Powerfactor)/1000 (Only Three phase )

KVA Vil b Given,

KW = KVA/Powerfactor (Both Single & Three Phase )

Answer / manik chatterjee

IN SINGLE PHASE,KW=V*I COS$
IN THREE PHASE,KW=1.732 *V*I COS$

Answer / e.subhash

KW = KVA X COS THETA

Answer / charlie

Kw=2*E*I*PF/1000

pls tell about gas insulated substation?which gas is used for that substation?above which rating we are used this substation?how we take maintenance in that substation?it means substation fully shutdown or live condition?if live condition means how?pls clear this things

1 Answers   Essar,

What is the general system requirement of alternator?

0 Answers  

how did the testing of protection relays done through current injection

0 Answers   Bhel,

Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.

0 Answers   SK Engineering,

If a three phased motor or not working phased change on poles so how to find which one red yallow & blue

1 Answers  

AVR

2 Answers  

I have 150/1A Rating CT Suppose if i inject 15A in CT " Secondary" means what will happen ??????

1 Answers  

how we can know which is Lv side and HV side of transformer by just seeing it?

7 Answers  

How do you connect the capacitors on polyphase circuits?

10 Answers   L&T, Transco,

Is a d.c.compound motor is use as a booster? how?

0 Answers  

where does 22kv line starts

0 Answers   Eskom,

Can we manually synchronize two DG sets of same ratings manually without using speed biasing ? If yes then how?

4 Answers