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Answer Posted / remo
At the time of generation there are many type of losses
therefore earlier use to write 10(+/- 1%)kv so thats why we
generally use to write it as 11kv.Since our ancestral make it
a standard of 11kv,33kv,66kv and as the year pass,many
engineers added a new myth of form factor,10% loss of actual
power.....and thus it make us to suffer a lot.
Since there is 230kv and still like 765kv which are not
multiple of 11.
and production in 11kv and 33kv is more ecnomical
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