From fu at ece.msstate.edu Sat Oct 30 22:08:52 2010 From: fu at ece.msstate.edu (Yong Fu) Date: Sat Oct 30 22:09:04 2010 Subject: [ece4613] Re: Question for Power transmission test In-Reply-To: Message-ID: <25697721.26321288494532488.JavaMail.root@zimbra.ece.msstate.edu> I will provide the equivalent diameter of the stranded conductor (Ds). Yong ==================================================== Yong Fu, Ph.D. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Room 239 Simrall Bldg. 406 Hardy Rd., P.O. Box 9571 Mississippi State, MS 39762 Phone: 662-325-3878 Fax: 662-325-2298 Homepage: http://www.ece.msstate.edu/~fu ==================================================== ----- Original Message ----- From: "Matthew Young" To: fu@ece.msstate.edu Sent: Friday, October 29, 2010 4:38:38 PM GMT -06:00 US/Canada Central Subject: Question for Power transmission test Dr. Fu, I have a question. If we are finding the equivalent inductance of a transmission line with stranded conductors, will you provide the equivalent diameter of the stranded conductor (Ds) or do we have to calculate this number? Thanks, Matt Young From fu at ece.msstate.edu Sun Oct 31 09:20:18 2010 From: fu at ece.msstate.edu (Yong Fu) Date: Sun Oct 31 09:20:26 2010 Subject: [ece4613] Re: Equation Sheet In-Reply-To: <4ccd645f.0d7adc0a.7483.ffff8ec3@mx.google.com> Message-ID: <30920551.141288534818392.JavaMail.root@zimbra.ece.msstate.edu> This time, you can bring two equation sheets, front and back? Yong ==================================================== Yong Fu, Ph.D. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Room 239 Simrall Bldg. 406 Hardy Rd., P.O. Box 9571 Mississippi State, MS 39762 Phone: 662-325-3878 Fax: 662-325-2298 Homepage: http://www.ece.msstate.edu/~fu ==================================================== ----- Original Message ----- From: "Kyle Ladner" To: fu@ece.msstate.edu Sent: Sunday, October 31, 2010 7:43:25 AM GMT -06:00 US/Canada Central Subject: Equation Sheet Dr. Fu, Are we allowed one equation sheet, front and back? Or are we allowed two separate equation sheets? -- Thanks, Kyle Ladner 601.528.2504 KBL56@msstate.edu From fu at ece.msstate.edu Sun Oct 31 15:06:42 2010 From: fu at ece.msstate.edu (Yong Fu) Date: Sun Oct 31 15:06:53 2010 Subject: [ece4613] Re: ask for numbers of sections In-Reply-To: Message-ID: <24839169.871288555602735.JavaMail.root@zimbra.ece.msstate.edu> Contents: Notes and Chapters 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.8, 4.9, 4.10,5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7 Yong ==================================================== Yong Fu, Ph.D. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Room 239 Simrall Bldg. 406 Hardy Rd., P.O. Box 9571 Mississippi State, MS 39762 Phone: 662-325-3878 Fax: 662-325-2298 Homepage: http://www.ece.msstate.edu/~fu ==================================================== ----- Original Message ----- From: "Farshid Shariatzadeh" To: "Yong Fu" Sent: Sunday, October 31, 2010 2:36:19 PM GMT -06:00 US/Canada Central Subject: ask for numbers of sections Dear Dr. Fu May I ask you section numbers of chapters four and five for midterm tomorrow? Bests, -- Farshid Shariatzadeh Ph.D. Student Department of Electrical and Computer Engineering Mississippi State University From fu at ece.msstate.edu Sun Oct 31 19:21:28 2010 From: fu at ece.msstate.edu (Yong Fu) Date: Sun Oct 31 19:21:36 2010 Subject: [ece4613] Re: about problem 4.36-b In-Reply-To: Message-ID: <13052898.1481288570887990.JavaMail.root@zimbra.ece.msstate.edu> I think that the solution is correct. This value is ???/km which should be less than ???/mile. Right? Thanks. Yong ==================================================== Yong Fu, Ph.D. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Room 239 Simrall Bldg. 406 Hardy Rd., P.O. Box 9571 Mississippi State, MS 39762 Phone: 662-325-3878 Fax: 662-325-2298 Homepage: http://www.ece.msstate.edu/~fu ==================================================== ----- Original Message ----- From: "Farshid Shariatzadeh" To: "Yong Fu" Sent: Sunday, October 31, 2010 7:04:06 PM GMT -06:00 US/Canada Central Subject: about problem 4.36-b Dear Dr. Fu I believe that a unintentional mistake happened in your solution for Homework 5, problem 4.36 (b): I think to find capacitive reactance in ohm.km from ohm.mile, we need to multiply it by 1.609 not to devide it! I would be appreciated if you check it. Bests -- Farshid Shariatzadeh Ph.D. Student Department of Electrical and Computer Engineering Mississippi State University From fu at ece.msstate.edu Sun Oct 31 20:32:34 2010 From: fu at ece.msstate.edu (Yong Fu) Date: Sun Oct 31 20:32:44 2010 Subject: [ece4613] Re: about problem 4.36-b In-Reply-To: <2674525.1651288574905444.JavaMail.root@zimbra.ece.msstate.edu> Message-ID: <15308408.1671288575154176.JavaMail.root@zimbra.ece.msstate.edu> I just checked it again. You are right. According to X_c (=1/2*Pi*60*C), ohm.km should be more than ohm.mile. So, 150,500*1.609 = 242,154 (about). Sorry for my mistake. Thanks. Yong ==================================================== Yong Fu, Ph.D. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Room 239 Simrall Bldg. 406 Hardy Rd., P.O. Box 9571 Mississippi State, MS 39762 Phone: 662-325-3878 Fax: 662-325-2298 Homepage: http://www.ece.msstate.edu/~fu ==================================================== ----- Original Message ----- From: "Farshid Shariatzadeh" To: "Yong Fu" Sent: Sunday, October 31, 2010 7:33:53 PM GMT -06:00 US/Canada Central Subject: Re: about problem 4.36-b I think you can check it with the value for F/Km in part (a). It should be equal to 1/(2*pi*f*C), and it will be 242244 that is also equal to 150500*1.609. Also, for that point you mentioned, I think it is ohm.km and ohm.mi not ohm/km or ohm/mi!!! so, ohm.km should be more than ohm.mile. Thanks. On Sun, Oct 31, 2010 at 7:21 PM, Yong Fu < fu@ece.msstate.edu > wrote: I think that the solution is correct. This value is ???/km which should be less than ???/mile. Right? Thanks. Yong ==================================================== Yong Fu, Ph.D. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Room 239 Simrall Bldg. 406 Hardy Rd., P.O. Box 9571 Mississippi State, MS 39762 Phone: 662-325-3878 Fax: 662-325-2298 Homepage: http://www.ece.msstate.edu/~fu ==================================================== ----- Original Message ----- From: "Farshid Shariatzadeh" < fs212@msstate.edu > To: "Yong Fu" < fu@ece.msstate.edu > Sent: Sunday, October 31, 2010 7:04:06 PM GMT -06:00 US/Canada Central Subject: about problem 4.36-b Dear Dr. Fu I believe that a unintentional mistake happened in your solution for Homework 5, problem 4.36 (b): I think to find capacitive reactance in ohm.km from ohm.mile, we need to multiply it by 1.609 not to devide it! I would be appreciated if you check it. Bests -- Farshid Shariatzadeh Ph.D. Student Department of Electrical and Computer Engineering Mississippi State University -- Farshid Shariatzadeh Ph.D. Student Department of Electrical and Computer Engineering Mississippi State University