How to calculate thevenin's equivalent resistance

Click For Summary

Discussion Overview

The discussion revolves around calculating Thevenin's equivalent resistance in a given circuit. Participants explore methods for finding this resistance, including the potential use of delta to star transformations, and share their calculations and reasoning.

Discussion Character

  • Technical explanation
  • Mathematical reasoning
  • Homework-related

Main Points Raised

  • One participant questions whether a delta to star transformation is necessary for calculating Thevenin's resistance, indicating uncertainty about the approach.
  • Another participant suggests that the circuit can be simplified using series and parallel resistor combinations without needing a transformation.
  • Several participants share their calculations, with one stating they found a Thevenin equivalent resistance of 1.33 ohms after shorting the batteries.
  • Another participant confirms their method of solving the circuit by combining resistors in parallel and expresses confidence in their result of 1.33 ohms.

Areas of Agreement / Disagreement

Participants generally agree on the final calculated value of 1.33 ohms for Thevenin's equivalent resistance, but there is some disagreement about the necessity of using a delta to star transformation in the calculation process.

Contextual Notes

The discussion lacks a visual representation of the circuit, which may limit understanding of the problem. There are also unresolved assumptions regarding the circuit configuration and the appropriateness of different methods for calculating Thevenin's resistance.

Who May Find This Useful

Students and practitioners interested in circuit analysis, particularly those learning about Thevenin's theorem and equivalent circuits.

hussain bani
Messages
9
Reaction score
0
when i short the batteries to find the rth, i can't get whether is should put delta to star transformation to find thevenines resistance?
can some one tell me how to calculate thevenines equivalent resistance in the figure shown... step by step
 
Last edited by a moderator:
Engineering news on Phys.org
It would help if there were actually a figure
 
Thevenine

Am uploading this word file it contains the image..:-)
 

Attachments

Why do you think you need a delta/star transform? You have simple series and parallel resistors. The problem reduces to an extraordinarily simple one. You should try redrawing the circuit with the supplies shorted out.
 
thevenine

so whT WILL BE nswer after shorting them and finding thevenine equivalent reistance across terninal a and b?
mine is coming 1.33 ohms, is it rite?
 
hussain bani said:
so whT WILL BE nswer after shorting them and finding thevenine equivalent reistance across terninal a and b?
mine is coming 1.33 ohms, is it rite?

Yes. See how easy that was?
 
thevenines

i solved 4 and 2 in parallel, and 10 parallel with ze0r, so automatically ans is 0 of 10 iin parallel with zero, so the only thing left was 4 in parallel with 2, that's is 1.33.
this is correct method right?
 
hussain bani said:
i solved 4 and 2 in parallel, and 10 parallel with ze0r, so automatically ans is 0 of 10 iin parallel with zero, so the only thing left was 4 in parallel with 2, that's is 1.33.
this is correct method right?

Yes. See how easy that was?
 
thevenines

yeah got it.. thanks a lot..:-)
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 27 ·
Replies
27
Views
4K
Replies
14
Views
2K
Replies
3
Views
1K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 6 ·
Replies
6
Views
6K
  • · Replies 22 ·
Replies
22
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
4K