All About Circuits Forum Dc short shunt compound generator problem
 Register Blogs FAQ Members List Today's Posts Search Today's Posts Mark Forums Read

 Homework Help Stuck on a textbook question or coursework? Cramming for a test and need help understanding something? Post your questions and attempts here and let others help.

#1
06-08-2008, 02:24 PM
 monkeyhead Junior Member Join Date: Mar 2007 Posts: 45
Dc short shunt compound generator problem

Hi,
I'm running through an example and trying to find out what the losses would be in the shunt field.

See attached image for the circuit diagram.

Anyhow I've figured out the following:
Quote:
 IL = 32 A Vf = 259.6 V If = 2.6 A Ia = 34.6 A E= 276.9V The efficiency to be : 76.92 % The iron,friction and windage losses to be : 819.26 W

What I'm a bit confused about is that I've found that the loss in the shunt field is equal to If * V which gives me 650 W.

However in my another notes it says that the loss in the shunt is equal to If^2 * Rf which gives me 676 W.

However which one would resemble the losses in the shunt field? Or have I gone completely the wrong way about this?

Many thanks,

Matt
Attached Images
 Picture 003.jpg (45.6 KB, 25 views)
#2
07-10-2008, 03:40 AM
 ahrjay007 New Member Join Date: Jul 2008 Posts: 3

what is the answer to that Q?....
tnx...

 Tags compound, generator, problem, short, shunt

 Related Site Pages Section Title Worksheet Power conversion circuits Worksheet Class A BJT amplifiers Worksheet Advanced electromagnetism and electromagnetic induction Worksheet Step-up, step-down, and isolation transformers Worksheet Passive integrator and differentiator circuits Worksheet Passive filter circuits Textbook Introduction : Ac Motors Worksheet DC motor control circuits Worksheet Kirchhoff's Laws Textbook Special-purpose diodes : Diodes And Rectifiers

 Similar Threads Thread Thread Starter Forum Replies Last Post Ryno3030 Programmer's Corner 5 12-06-2007 03:46 PM mlkcampion General Electronics Chat 3 11-02-2007 03:24 AM mlkcampion General Electronics Chat 10 03-20-2007 02:35 PM nanobyte General Electronics Chat 15 12-14-2006 03:52 PM ukrazy21 General Electronics Chat 1 04-28-2005 06:51 PM

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Electronics Forums     General Electronics Chat     The Projects Forum     Homework Help     Electronics Resources Software, Microcomputing, and Communications Forums     Programmer's Corner     Embedded Systems and Microcontrollers     Computing and Networks     Radio and Communications Circuits and Projects     The Completed Projects Collection Abstract Forums     Math     Physics     General Science All About Circuits Commmunity Forums     Off-Topic     The Flea Market     Feedback and Suggestions

All times are GMT. The time now is 12:20 AM.