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Kavita Sharma
Participant

Join Date: Aug 2010
Posts: 1

Electrical Engg. question

08/21/2010 1:44 AM

Why all transmission voltages are multiple of 11?
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kvsridhar
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India - Member - New Member

Join Date: Sep 2009
Location: Temporarily at Ashburn, VA
Posts: 2744
Good Answers: 164
#1

Re: Electrical Engg. question

08/21/2010 2:38 AM

Hi Kavita,

Welcome to CR4.

Please use the search window on the right, this question is perhaps the most frequently asked one on this forum, you will find plenty of answers.

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iraqeng
Participant

Join Date: Aug 2010
Posts: 1
#2

Re: Electrical Engg. question

08/21/2010 11:16 AM

hi kavita

i think not all all transmission voltage multiple of 11, there is 400 kv and it is not multiple of 11 thank you .
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#3

Re: Electrical Engg. question

08/21/2010 2:24 PM

And how about others such as 120, 240, 380, 415, 4150, etc.?

One of the supposed historical answers was that 100 volts was a nice round number at the receiving end, with 110 being transmitted to allow for voltage drop. And then transformer multiples from there.

This question has been asked and answered a gazillion times on CR4.

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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

Join Date: Sep 2006
Location: California, USA, where the Godless live next door to God.
Posts: 4665
Good Answers: 804
#4

Re: Electrical Engg. question

08/22/2010 3:52 PM

I think this is about the 200th time this same lame question has been asked here. It must be some sort of question on a test somewhere.

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