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Question
why transmission line 11Kv OR 33KV,66Kv not in 10kv 20kv?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 11
everybody is copying from books and pasting here not even
one answer is practical..
 
Is This Answer Correct ?    8 Yes 3 No
Shahulsnfa
 
Answer
# 12
i can't think so,plz give me rgt ans. 
Is This Answer Correct ?    4 Yes 0 No
Neel
 
Answer
# 13
why not in transmission voltage we use 55 77 88 
Is This Answer Correct ?    3 Yes 0 No
Abhijeet
 
Answer
# 14
The reason for these "odd" voltage figures dates back
years.The original idea was to make up for the voltage drop
in long transmission line conductors , hence 11KV was
designed to deliver 10 KV at the end of the line , 132 KV
was designed to deliver 130KV at the end of the line and so
on. It has nothing to do with form factor . Also this has
long been abandoned and nowadays the voltage supplied at
the end of the line should be the voltage stated plus or
minus a very small percentage. 400 KV voltage appeared
after this idea was abandoned , hence it is a " round "
figure . Otherwise it might have been 405 or 410 KV !
 
Is This Answer Correct ?    5 Yes 3 No
Bigwoolleypenguin
 
Answer
# 15
It is due to only FORM Factor 1.11 
Is This Answer Correct ?    4 Yes 2 No
Sandeep Bishla
 
Answer
# 16
Because the transmission losses will be less in the below voltages as calculated,
11KV
33KV
110KV
230KV
And in 66KV
 
Is This Answer Correct ?    3 Yes 1 No
Jayakrishnan
 
Answer
# 17
since form factor for sinusoidal wave is 1.11 which is a
multiple of 11 so generation and transmission is done at
11,33,66kv
 
Is This Answer Correct ?    20 Yes 19 No
Niranajn
 
Answer
# 18
As per our Indian standard it is derived from the form
factor I quite agrree to this answer because one question
arise why not 22,44,55,77..... & why 400 KV?
 
Is This Answer Correct ?    11 Yes 10 No
Subhash
 
Answer
# 19
any one who say that it is due to form factor is incorrect ,
no such reason for this question, at starting addison
produce 110 v dc, and that production nature also follow in
ac system.
 
Is This Answer Correct ?    7 Yes 6 No
Vinod
 
Answer
# 20
i think it is not related with form factor as many replied
because if so then why 400 kv or 765 kv is followed as
these r not multiple of 11.i think becuse of constrainst in
gen voltage that is between 10.5 to 15 kv we[earlier]to
choose 11 kv and 33 66 132 kv r multiple of 11 to suite
our transformation ratio.if once follewed it continuied
otherwise i dont find any reason that with 12 kv gen why v
cant have 44 144 kv transmission.
 
Is This Answer Correct ?    3 Yes 2 No
Niraj Talan
 

 
 
 
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