Wye Delta Transformation finding equivalent resistance Help

Atif12

Joined Nov 27, 2012
2
I need help in this one Assignment Question. I have tried to solve it but could not succeed in it. After applying one transformation from wye to delta or delta to wye the circuit is getting very complicated.

Can anyone can help me in this one question?

I would be very grateful

Regards,

Atif

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atferrari

Joined Jan 6, 2004
4,122
You need to start somewhere, any place but start.

If this could inspire you, look how I did it once, here

The pdf shows the whole process. Even the maths for that case.

Buena suerte.

Last edited:

The Electrician

Joined Oct 9, 2007
2,802
Are you required to use Wye-Delta transformations to solve this problem, or can you use some other method?

Atif12

Joined Nov 27, 2012
2
I have to solve this question only through Wye-Delta transformation

atferrari

Joined Jan 6, 2004
4,122
Hola Atif,

Could you show how many steps you did before finding it complicate?

Have you even looked at what I suggested?

Just by looking at your problem, less than 90 more than 10.

The Electrician

Joined Oct 9, 2007
2,802
Just by looking at your problem, less than 90 more than 10.
Just by looking, it's less than 80 and more than 40.

atferrari

Joined Jan 6, 2004
4,122
Willing to bid closer but he still has to do something. PM on the way.

atferrari

Joined Jan 6, 2004
4,122
Hola Atif. Any progress from your side?

If you show me the first transform (valid one) I would show the second one. The maths will be all on you.

Do you agree? If you like we could try to complete the whole thing that way.

Last night I worked out the complete solution by hand in 1h 40m.

Just a tip that is rarely explained: delta to wye creates resistors to be added and wye to delta creates resistors that would be in parallel with the existing ones.

If you proceed carefully, you will arrive to the right result.