Recent content by scothoward

I am currently doing a simulation in PowerWorld where there is simply a generator transmission line and load. The Q (reactive power) of the load is being kept constant and the P (real power) of the load is being increased from 0 to Q. From this, the load bus voltage is being plotted against...

Hi, I am hoping you can help me understand this concept. I've always known that generators operating a leading power factor lowers voltage drop and a lagging power factor increases voltage rise (as seen here...

Hey - I am trying to get a better idea regarding the notion of power factor, and power factor correction as it relates to power systems. Here are my thoughts (I'm looking for confirmation that my intuition is correct): In a power system with inductive loads, the power factor is lagging...

Homework Statement Joint pdf given as kxy for 0 < x < y < 1. Find the value of k. The Attempt at a Solution I understand the process of finding k - doing the double integral and setting it to 1. What I don't understand is the limits of integration for y. I've seen two...

In my text it says, "As a result of the negative feedback, it can be shown that the closed-loop gain is almost insensitive to the open-loop gain A of the op amp. For this reason, op amps are used in circuits with feedback paths." I am a bit confused on what it means by closed-loop gain is...

http://youtube.com/profile_play_list?user=nptelhrd It looks like IIT is broadcasting a ton of Engineering (mostly Electrical and Computer) video lectures. These are complete courses! Enjoy

Homework Statement Hey, I am trying to approximate the solution to a second order ODE using the 4th order Runge-Kutta. I was told that in order to do this, I have to write the second order ODE and a pair of 1st order ODEs. Given that my differential equation is d^2v/dt^2 + adv/dt...

Hi, I am writing a function that takes in a real data array and a key partition value, which will rearrange the array so that elements with a lower value than x are placed before the elements with values >= the partition value. It then returns the index of the last element of the array with a...

Hi, I am having trouble understanding the three light bulb method for checking whether of not two generators have the same phase sequence. It states in my book, "If all three bulbs get bright and dark together, then the systems have the same phase sequnce." My question is, if the two...

Hi, I am currently a 3rd year electrical engineering student and I will looking for 12-16 month co-op/internship following the completion of this year. I have received some reference letters from my professors and just wanted to know, is it advisable to include one or two along with my resume...

Hey, I am currently reading about transformers and one aspect of the equivalent circuit that I do not understand is why the leakage flux is represented by an inductor? Any help on this would be much appreciated. Thanks!

Thanks for the help Dick! Just to clarify one more thing. Presuming that I did calculate the paritals right and that leads to 0 + i0, wouldn't that lead to the original function being undefined? As a result, wouldn't the function be differentiable no where?

Thinking about it a little more, would this mean when x = 3y, the function is differentiable and when either x=0, y=0, the function is differentiable? Or is my thinking wrong?

Alright, so doing the partials and equating I get x = 3y and xy = 3xy But, I am a little confused on what to do from here. Thanks for the help

Hmm I was thinking, maybe I could take the partials of U and V (Cauchy-Riemann) equate them, and find out what x,y have to be in order for the equations to be satisfied. Am I on the right track?