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Anonymous Poster

efficency of the transformer

03/17/2008 3:53 AM

hi

how to calculate efficency of the transformer
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j_kamal
Associate
Engineering Fields - Energy Engineering - New Member India - Member - Jack of all trades

Join Date: Jan 2008
Location: India
Posts: 43
Good Answers: 2
#1

Re: efficency of the transformer

03/17/2008 4:23 AM

Read a book on Basic Electrical Enginering and go through the code of conduct for this forum as well. Don't post your home work questions please. however, follwing should be good for you.

voltage in * current in = power in
power in * cosine of the equivalent primary resistance = Ans in

then voltage out * current out = power out
power out * cosine of the equivalent secondary resistance = Ans out

finally transformer efficiency (%) = (Ans out * Answer in) * 100

j_kamal

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nesubra
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Join Date: Nov 2006
Posts: 729
Good Answers: 2
#2

Re: efficency of the transformer

03/17/2008 7:10 AM

are u designing a transformer or trying to calculate the eff.of a transformer u have alreadyMy standard reply to this type of question is refer Electric machinery by Fitzerald and Kingsley a very good book for theory and practice.

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biswanath.das
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Join Date: Oct 2006
Location: Kolkata, India
Posts: 447
#3
In reply to #2

Re: efficency of the transformer

03/18/2008 3:08 AM

I think CR4 forum is not for non technical people.

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V.I.Abraham
Guru
Safety - ESD - New Member India - Member - New Member Engineering Fields - Energy Engineering - New Member

Join Date: May 2007
Location: Pune , India
Posts: 875
Good Answers: 42
#4

Re: efficency of the transformer

03/19/2008 11:06 AM

Read the book

" Power Transformers Principles and application.

Author : John J Winders

Once you study this book you can design a transformer.

There are so many other books please read . There is no short cuts.
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biswanath.das (1); j_kamal (1); nesubra (1); V.I.Abraham (1)

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