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Problems Delta to Wye conversion

I have a circuit like this. And, I want to calculate resistance from here. I was following these steps. I was calculating resistance for left side circuit. $$R_1=\frac{2 × 2}{2+2+4}=0.5\Omega$$...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by Olin Lathrop‭

#3: Post edited by (deleted user) · 2021-05-09T13:59:11Z (over 3 years ago)
  • [![enter image description here][1]][1]
  • I have a circuit like this. I was following these [steps](https://www.allaboutcircuits.com/textbook/direct-current/chpt-10/delta-y-and-y-conversions/).
  • I was calculating resistance for left side circuit.
  • $$R_1=\frac{2 × 2}{2+2+4}=0.5\Omega$$
  • $$R_2=\frac{2 × 4}{2+2+4}=1\Omega$$
  • $$R_3=\frac{2 × 4}{2+2+4}=1\Omega$$
  • Then, I took series and parallel circuit. Then, calculated equivalent of resistance.
  • $$R_s1=0.5+3=3.5$$
  • $$R_s2=1+3=4$$
  • $$R_p=(\frac{1}{3.5}+\frac{1}{4})^-1=1.8677$$
  • $$Requivalent=1.8677+1=2.8667$$
  • I am not sure if it is correct. If it is wrong than how can I proceed?
  • [1]: https://i.stack.imgur.com/dbNPL.png
  • [![enter image description here][1]][1]
  • I have a circuit like this. And, I want to calculate resistance from here. I was following these [steps](https://www.allaboutcircuits.com/textbook/direct-current/chpt-10/delta-y-and-y-conversions/).
  • I was calculating resistance for left side circuit.
  • $$R_1=\frac{2 × 2}{2+2+4}=0.5\Omega$$
  • $$R_2=\frac{2 × 4}{2+2+4}=1\Omega$$
  • $$R_3=\frac{2 × 4}{2+2+4}=1\Omega$$
  • Then, I took series and parallel circuit. Then, calculated equivalent of resistance.
  • $$R_s1=0.5+3=3.5$$
  • $$R_s2=1+3=4$$
  • $$R_p=(\frac{1}{3.5}+\frac{1}{4})^-1=1.8677$$
  • $$Requivalent=1.8677+1=2.8667$$
  • I am not sure if it is correct. If it is wrong than how can I proceed?
  • [1]: https://i.stack.imgur.com/dbNPL.png
#2: Post edited by (deleted user) · 2021-05-09T09:55:26Z (over 3 years ago)
  • [![enter image description here][1]][1]
  • I have a circuit like this. I was following these [steps](https://www.allaboutcircuits.com/textbook/direct-current/chpt-10/delta-y-and-y-conversions/).
  • I was calculating resistance for left side circuit.
  • $$R_1=\frac{2 × 2}{2+2+4}=0.5\Omega$$
  • $$R_2=\frac{2 × 4}{2+2+4}=1\Omega$$
  • $$R_3=\frac{2 × 4}{2+2+4}=1\Omega$$
  • Then, I took series and parallel circuit. Then, calculated equivalent of resistance.
  • $$R_s1=0.5+3=3.5$$
  • $$R_s2=1+3=4$$
  • $$R_p=(\frac{1}{3.5}+\frac{1}{4})^-1=1.8677$$
  • $$Requivalent=1.8677+1=2.8667$$
  • I am not sure if it is correct.
  • [1]: https://i.stack.imgur.com/dbNPL.png
  • [![enter image description here][1]][1]
  • I have a circuit like this. I was following these [steps](https://www.allaboutcircuits.com/textbook/direct-current/chpt-10/delta-y-and-y-conversions/).
  • I was calculating resistance for left side circuit.
  • $$R_1=\frac{2 × 2}{2+2+4}=0.5\Omega$$
  • $$R_2=\frac{2 × 4}{2+2+4}=1\Omega$$
  • $$R_3=\frac{2 × 4}{2+2+4}=1\Omega$$
  • Then, I took series and parallel circuit. Then, calculated equivalent of resistance.
  • $$R_s1=0.5+3=3.5$$
  • $$R_s2=1+3=4$$
  • $$R_p=(\frac{1}{3.5}+\frac{1}{4})^-1=1.8677$$
  • $$Requivalent=1.8677+1=2.8667$$
  • I am not sure if it is correct. If it is wrong than how can I proceed?
  • [1]: https://i.stack.imgur.com/dbNPL.png
#1: Initial revision by (deleted user) · 2021-05-09T09:54:38Z (over 3 years ago)
Delta to Wye conversion
[![enter image description here][1]][1]

I have a circuit like this. I was following these [steps](https://www.allaboutcircuits.com/textbook/direct-current/chpt-10/delta-y-and-y-conversions/).

I was calculating resistance for left side circuit. 

$$R_1=\frac{2 × 2}{2+2+4}=0.5\Omega$$
$$R_2=\frac{2 × 4}{2+2+4}=1\Omega$$
$$R_3=\frac{2 × 4}{2+2+4}=1\Omega$$

Then, I took series and parallel circuit. Then, calculated equivalent of resistance.

$$R_s1=0.5+3=3.5$$
$$R_s2=1+3=4$$
$$R_p=(\frac{1}{3.5}+\frac{1}{4})^-1=1.8677$$
$$Requivalent=1.8677+1=2.8667$$

I am not sure if it is correct.


  [1]: https://i.stack.imgur.com/dbNPL.png