Answer Posted / bhupinder
KVA mean Voltage x Current
and
KW mean Voltage x Current x Power factor
The only difference is power factor
Power factor depends upon load and its value varies from
0.5 to 1
As kw is depend upon the power factor , but kva does not
depends upon the power factor mean kva of any transformer
or generator does not change with power factor . SO to know
the correct power of transformer ,we use kva as it nothing
to do with load type or power factor value
Is This Answer Correct ? | 28 Yes | 3 No |
Post New Answer View All Answers
how does directional relay work incase of ac ?
Sate maximum power transfer theorem?
What does bode plots shows?
What are the advantage of free wheeling diode in a full wave rectifier?
A TRANSFORMER 440/400V,DELTA/STAR CONNECTED.THE NEUTRAL CONNECTED WITH GROUND CABLE THAT IS DIRECTLY CONNECTED TO THE PANEL,FROM PANEL IT IS CONNECTED EARTH PIT.IS IT RIGHT? IF IT IS RIGHT LEAKAGE CURRENT AFFECTED.SECONDATY IS PROTECTED WITH EARTH LEAKAGE RELAY.
what is earthing transformer? draw the winding dia.of earthing transformer.
can someone explain that how the speed of the protection system affects the fault level calculation?
BSNL TTA EXAM QUESTION
Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?
Wind mill
what is meant by vector group of a transformer? How can it be derived?
Hoe do calculate the Cable size for Amps rating ?
what is the ground fault relay,which purpose it will be use,clearly tell me plz
what are the disadvantages in GIS over AIS
can anyone show me how the 3 phase power is supplied to socket outlets?