Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / panda171
Power given to the transformer is Apparent power (K)
it is the supply power of the power house and the power
given by the transformer to the Load is the true power or
Active power which is actual used by the load and rest is
the reactive power i.e. square of apparent power including
iron loss & copper loss in KVA = square of true power in KW
+ square of reactive power in KVAR. A sound transformer
efficiency is 98% (input power- Iron loss (k) & copper loss
= output power).
For full resistive load (at unity pf ) a 100 KVA
transformer gives 100 KW (approx.) true power, and for
inductive power at .8 pf the same will able to give 80 KW
(approx.) true power, but the types of load (its pf) is not
know before which to be connected across the transformer,
this is only why the transformers are rated in KVA and it
is meaningless to discuss about the iron loss and copper
loss because the Inventor and UPS are also rated in
KVA.
In other hand or in simply we can
say due to unknowing power factor the transformer,
generator etc are rated in KVA. In heavy size transformer
copper loss is more and it vary with load and Climate
i.e. transformer oil condition but it is not reason to
rating the transformer in KVA.
P.C. Panda (BRG)
Mob 9938431756
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
what is the thumb rule for determination resistance of resistor?
what will happen when the dc supply is given to the capacitor?
what is p.s impedance measurement test in earthing transformer?
Single line digram for 11 kV to distribution use go,la and do
How i can calculate current of cable according to ares?
hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....
What is the formuala to calculate the rating of motor protection circuit breaker
What types domain of laplace transforms? What behavior can laplace transform predict how the system work?
why ht cable end termination don't have a gland?
How 3 phase invertor works?
What is capacitance?
Can RCD's used to protect the VVVF drive if not why.
Which motor will you choose which can operate in both lagging as well as leading power factors?
why 15 kw motor winding resistance is low then 5 kw motor winding resistance?
how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.
