Engineering Simple transformer circuit with 3 resistors

[Clyde Wong]

Homework Statement

2. Homework Equations [/B]
V₁N₂=V₂N₁
I₁N₁=I₂N₂

The Attempt at a Solution

For a part[/B]
I try to draw 3 mesh but I cannot write down the equation.
Can someone help me out?

 

[gneill]

Hello Clyde Wong,

Welcome to Physics Forums!

I try to draw 3 mesh but I cannot write down the equation.
Can someone help me out?

You'll have to show us more detail of what you've actually attempted (check the Forum Rules or have a look at the pinned thread: Guidelines for Students and Helpers ). What are you trying to solve for first, the open circuit voltage or short circuit current? Can you show us which three meshes you've identified?

 

[Babadag]

 

[The Electrician]

Look back at the original schematic. Voc is not taken across R3 alone; it's across R3 and the output (so to speak) winding of the transformer.

 

[Babadag]

Thank you The Electrician, my mistake.

 

[rude man]

So are you going to solve for Voc or Isc or both? I have answers & could let you know if our results agreed or not.

 

[The Electrician]

Clyde Wong, you said you tried to draw 3 meshes. There are 3 obvious meshes which I've shown here. Try to solve for Isc using these meshes. Can you try to write the equation for I1?

 

[The Electrician]

Methinks Clyde Wong is not coming back. This problem is a slight rehash of a problem dealt with 4 years ago: https://www.physicsforums.com/threads/transformer-mesh-current-problem.753480/

Perhaps there would be value to people who may find this problem in the future to see a solution. How many ways can it be solved?

 

[gneill]

Methinks Clyde Wong is not coming back. This problem is a slight rehash of a problem dealt with 4 years ago: https://www.physicsforums.com/threads/transformer-mesh-current-problem.753480/

Perhaps there would be value to people who may find this problem in the future to see a solution. How many ways can it be solved?

Likely it could be valuable, but it would go against PF policy to directly offer up solutions to any homework. Also, so far it's only been 9 days since the Original Post was made, hence much too soon to call this a moribund thread; Some homework assignments can have several week deadlines and it's possible that other members or guests have the same homework problem.