Previous in Forum: for star delta stater   Next in Forum: NEMA WC 70 ?
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
11 comments
Rate Comments: Nested
Anonymous Poster

Number of kvl Loops to Use as Equations

06/27/2010 4:32 AM

so the number of kcl equations i should take out of a problem is equal to the number of loops minus one right? then how many kvl equations am i allowed to take out without repeating myself?
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Good Answers:

These comments received enough positive votes to make them "good answers".
DVader1000
Guru
Engineering Fields - Environmental Engineering - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: May 2007
Location: Anywhere Emperor Palpatine assigns me
Posts: 2774
Good Answers: 101
#1

Re: number of kvl loops to use as equations

06/27/2010 5:03 AM

Woohoo, my latest victim. What is it now, number 8 or 9?

__________________
 If only you knew the power of the Dark Side of the Force
Reply Off Topic (Score 5)
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#2

Re: number of kvl loops to use as equations

06/27/2010 6:29 AM

Yes, and these are the ones with enough mental capacity to still type. Just think of the others, so addled that they are sitting in the corner drooling and staring at the walls.
Reply Off Topic (Score 5)
DVader1000
Guru
Engineering Fields - Environmental Engineering - New Member APIX Pilot Plant Design Project - Member - New Member

Join Date: May 2007
Location: Anywhere Emperor Palpatine assigns me
Posts: 2774
Good Answers: 101
#4
In reply to #2

Re: number of kvl loops to use as equations

06/27/2010 8:25 AM

Look on the bright side. If they're so addled that's all they can do, at least they can't cause mischief elsewhere.

__________________
 If only you knew the power of the Dark Side of the Force
Reply Off Topic (Score 5)
2
Anonymous Poster
#3

Re: number of kvl loops to use as equations

06/27/2010 6:59 AM

It depends upon the elements in the loop. If they are pure resistive then the number is the number of loops minus two. If a mixture of resistive and reactive then it is typically the number of loops minus one. But, if a loop is pure reactive and the elements are prime numbers then the problem can not be solved without having two equations per purely reactive loop. It is good that you asked because most professors will not teach this in class and you only see it as a trick question on the final exam.
Reply Good Answer (Score 2)
No more Good Answers.
Anonymous Poster
#5

Re: number of kvl loops to use as equations

06/27/2010 11:03 AM

thank you Guest, that was a very clear explanation. i wish the registered members were as helpful as you. wtf r u guys talking about anyway
Reply
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#6
In reply to #5

Re: number of kvl loops to use as equations

06/27/2010 10:45 PM

And wtf are YOU talking about? You say "kvl" one time and "kcl" another, and both are relatively obscure abbreviations. Ask a confused question, get some confused answers.

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Reply
kvsridhar
Guru
India - Member - New Member

Join Date: Sep 2009
Location: Temporarily at Ashburn, VA
Posts: 2744
Good Answers: 164
#7
In reply to #6

Re: number of kvl loops to use as equations

06/27/2010 11:10 PM

It seems to have something to do with Kirchoff's law .. an example here..

__________________
 Nothing worthwhile can ever be taught, it can only be learnt.
Reply
Anonymous Poster
#8
In reply to #7

Re: number of kvl loops to use as equations

06/27/2010 11:37 PM

There are a lot of loops and therefore they will be hard to count. As can be seen, all elements are distributed and reactive. Chances are that they are not prime. Therefore, the OPs desire for a count can be met.
Reply
Anonymous Poster
#10
In reply to #6

Re: number of kvl loops to use as equations

06/28/2010 5:55 AM

CR4 Admin: Deleted Post #10

This post was deleted because it did not adhere to the behavioral policies of the site. Please review Section 14 of the CR4 Site FAQ about rules for posting.
Reply
mjb1962853
Guru
Engineering Fields - Electrical Engineering - Analog and Digital Circuit Design Engineering Fields - Electromechanical Engineering - Transformers, Motors & Drives, EM Launchers Engineering Fields - Engineering Physics - Applied Electrical, Optical, and Mechanical

Join Date: Jan 2008
Location: NY
Posts: 1207
Good Answers: 119
#9
In reply to #5

Re: number of kvl loops to use as equations

06/28/2010 2:02 AM

Does this help? http://en.wikipedia.org/wiki/Mesh_analysis
Reply
FLIPFLOP
Associate

Join Date: May 2009
Location: Kansas City, Missouri
Posts: 48
Good Answers: 2
#11

Re: Number of kvl Loops to Use as Equations

06/28/2010 1:09 PM

get your equations and use MATLAB to solve them. most real-world circuits have way too many loops to analyse by hand anyway. know how to solve for a few loops (say 5-7), learn MATLAB and PSPICE, and you should be good to go. P.S: KCL is to nodal analysis as KVL is to mesh analysis.

__________________
 E pur si muove -- Galileo
Reply
Reply to Forum Thread
Have a Different Question?
11 comments

Good Answers:

These comments received enough positive votes to make them "good answers".
Copy to Clipboard

Users who posted comments:

Anonymous Poster (4); DVader1000 (2); FLIPFLOP (1); kvsridhar (1); lyn (1); mjb1962853 (1); Tornado (1)

Previous in Forum: for star delta stater   Next in Forum: NEMA WC 70 ?

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (61 right now)
Show Members
Advertisement