How does frequency affect KVA rating of a transformer?
If a 500 kva, 400 v, 60 hz t/f is to be operated on 50 hz
frequency then how will its KVA rating change?
a-increase
b-decrease
c-remains same
Also explain why do u think like that.

Answer Posted / guest

remains same since kva rating depends on iron loss and
copper loss which means it depends on voltage and current.

Is This Answer Correct ?    9 Yes 44 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

pls someone send me sample question papers along with the key.thanks in advance

1889


how to carried out DAR test in 11 KV Alternator ?

1848


11 kV line deraction check by an Engineer.

1525


how to select the no. of brushes in a lap winding?

1757


What are the transformer losses?

678






is ac supply can store

1518


How we calculate the size of ht cable for any transformer

1559


What is sink and source?

677


What aturn on methods of scr?

709


How will polarity test of Dy5 Transformer ?

1791


What must be the minimum distance maintained between 2 Generators as per International standards?

1589


how do we calculate length of starting time and repeated starting of a direct online starter?

1552


IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

3203


how to calulate short circuit current for the following: 1.cable connecting 11KV of 22KV/11KV transformer to 11Kv of 11KV/415V transformer 2.what cable size should i use.

1633


How the annunciator works ? How to do its wiring

1818