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Why transformer rating in KVA? describe.
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Answer / shiva
kva is active power+ reactive power
the really used power is active power only.
which is v*i*cos pi.
but we dont know user's power factor so ratings are kva for t/f.
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / biswaranjan das
Transformers Are Rated In Kva Because Generally There Are Two Losses In A Transformer I.e Core/iron Loss & copper Loss Due To Transformer Is A Stready Device So Their Is No Loss Of Mechanical . Due To the Core Losses Depends upon Voltage(v) & copper Losses Depends Upon Current(A) So The total Losses Depends Upon VA I.e KVA .
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / sandip paul
Trafo losses depends on voltage and current only. voltage
influences the core loss or no load loss and current or
load influences the copper loss. no loss depends on power
factor of the load. thus efficiency is mainly governed by v
and I only. hence o/p whis is the ratio of (i/p - losses)/
i/p is controlled by v and I. Hence trafo rating is defined
in KVA no KW.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / rams
due to the losses of transformer dependas on the current
and voltage.
| Is This Answer Correct ? | 1 Yes | 0 No |
transformer rating in
kva because power
factor of transformer
is always depended on
other load.
| Is This Answer Correct ? | 0 Yes | 0 No |
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