• Derive the DC permanent magnetic motor model using the appropriate physical laws. Based on the equation you derived, find the formulas for plotting current, speed, power, efficiency against load torque.

 

Have you tried putting keywords into the little google box thingy at the upper right of your browser window?

 

Here is a return from the first page of searches on "DC magnetic motor model"

http://www.rci.rutgers.edu/~dbirnie/solarclass/MotorPrimerGaTech.pdf

Sounds like just what you need. Gee that was simple!

 

Yeah I got that already.

 

All the equations and reasons are given to you in the first two pages. What part Exactly is giving you a problem?

How far have you gotten on working out an answer?

 

How far have you gotten on working out an answer?

Far enough to figure out we wouldn't do his homework for him without some more effort on his part... I wonder which website finally gave him his answer? And I wonder who will hire him when (and if) he graduates and eventually fires him because he's useless...

DO YOUR HOMEWORK guys. It's the only way you'll ever remember it. THEN you can start forgetting the stuff, like I am doing, twenty and thirty years later.