Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Engineering and Comp Sci Homework Help
Synchronous Motor Phasor Diagram
Reply to thread
Message
[QUOTE="jaus tail, post: 5561302, member: 506554"] It's not really a problem but I was studying Sync Motors for assignment and didn't understand few things. [B] 1. Homework Statement [/B] [PLAIN]http://s1320.photobucket.com/user/ajaytulsiani/media/-%20ia_zps8oujbzrh.jpg.html[/PLAIN] [PLAIN]http://s1320.photobucket.com/user/ajaytulsiani/media/synch_zps3bry0aah.jpg.html[/PLAIN] [ATTACH=full]203075[/ATTACH] [ATTACH=full]203076[/ATTACH] In the first picture...what is the point of -Ia. I mean when synchronos machine is working as alternator then current is Ia. Now the sync machine is working as motor so direction of Ia is reversed. That is shown in phasor. what is the point of adding a -Ia. And shouldn't power factor be between Ia and Ef instead of -Ia and Ef. In second picture if you look at third picture, isn't direction of IaXr wrong? Shouldn't it be towards left like the arrow be pointing left so the phasor looks like: Vt = Ef + IaXar? [h2]Homework Equations[/h2] For first question...current flows out of armature in case of sync generator while it flows into armature in case of sync motor. Power factor is between load voltage and load current, which is Ia and not -Ia. For second question equation for motor is Vt = Ef + IaXar. But if you look at second picture, third phasor, then it appears that Ef = Vt + IaXr [h2]The Attempt at a Solution[/h2] Well i just tried reading it again and again but didn't understand why IaXar phasor is otherway around? Any help would be appreciated... Thanks [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Engineering and Comp Sci Homework Help
Synchronous Motor Phasor Diagram
Back
Top