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  1. V

    Calculating Voltage Drop for 200HP Motor at 480V

    Hi, I was wondering if anyone can help me figure out how much voltage drop is happening in this particular scenario. Here is my work: Given 200HP motor at 480V that is 300 ft. away from the starter. %VD(3phase) = [12(1.73)(300ft.)(240A)]/[(Circular mil) * (480V)] x100 I use 12 for...
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    Utilitarianism-john stuart mills

    Hi, Do anyone agree with Mill's statement that it is better to be a dissatisfied Socrates than a satisfied pig(Bentham's ethics)?
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    Currently studying Nicomachean Ethics

    Hello, Im currently studying Nicomachean Ethics, and was wondering someone can help me out with this question. I'm actually an Electrical Engineering major, so obviously I am not very good with this philosophy thing. If anyone could help me, it would greatly be appreciated. According to...
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    Need help W/ Digital Camera Design Project

    Hello, I am currently working on a Design Project for my Senior project, and the aim of this project is the development and construction of an interface between a CMOS camera and a computer. This interface allows a user to get images from the camera, to change some of the properties of the...
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    What is Locke's main argument

    Are there any other arguments regarding Locke's political philosophy? besides the belief that the government could only exist with the consent of the governed. and the belief that people have to the natural right to life, liberty, and property. any help would be appreciated.
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    Tips for passing the EIT

    Hello all, I'm about to take the EIT test this coming Saturday. If it is not too much trouble, can you guys give me some advice or tips on how i can maximize my chances of passing? Thanks
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    Epistemology, metaphysic, ethics

    no, i just want to know the explanation of how these are related/connected to one another. sorry if I am being too broad
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    Epistemology, metaphysic, ethics

    Plato Metaphysics: Dualism-the belief that there are two realities in the universe; spiritual/intellectual and physical/perceptual Epistemology: Rationalism-the belief that knowledge comes from reasoning in the basis of inborn ideas (not sense perception) Ethics: the strive to turn away from...
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    Epistemology, metaphysic, ethics

    Hello all, How are the metaphysics, epistemology, and ethics of each philosophy (Plato, Aristotle, Materialism, Sophists/Skepticism) connected or related to one another? Any help would be appreciated.
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    Philosophy vs Religion: Similarities & Differences

    Helllo all, I was just wondering what are the similarities and differences do philosophy and religion have with one another? I believe that each religion, insofar as it uses logical reasoning, is an example of philosophy. That's the only similarity that i can think of. thanks
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    Need help with communication system problem

    Ok, so i just started taking a course in Communication systems. So far I am confused. I am never going into communication systems, but i still have to take the required course. I'm going into either Power or Control Systems. But anyways, I really need help with this communcation problem...
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    Var(x) = E[ x^2] - (E[X])^

    yeah i got that part, similar to distributive property, but where does variance come from? Like how did they get E[x^2]-(E[X])^2 ? How did they get E[x^2] and (E[X])^2 ??
  13. V

    Var(x) = E[ x^2] - (E[X])^

    Hi, Can someone please please show me why Var(x) = E[ x^2] - (E[X])^2. I just don't get it. THanks in advance. :smile:
  14. V

    Probability Density Function - Need Help

    ok, i did a little more thinking :tongue2: and this is what i got now... For region w>0, the region of integration is outside so CDF Fw (w) is 0 For region 0<=w<=1, i used double integration, and i get w^2/2 For region 1<=w<=2, i get 2w-1-w^2/2 For region w>2, i get 1. So to find...
  15. V

    Question about engineering

    thank you for all of your advices... What type of questions should i ask about the company? Since i already know what the company manufactures, should i ask something about that? I mean, what are some good general post-interview questions...
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    Question about engineering

    Howdy, I don't know if this is the right place to post this, but i need some advice on something... I have this internship interview next Tuesday, and I'm freaking out. This is my first internship interview, and i really want to make a great impression on the company. Does anyone have...
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    Probability Density Function - Need Help

    Probability Density Function -- Need Help! Hi, Can someone please check my work if i did the problem correctly? thanks in advance. Here is the problem: Find the PDF of W = X + Y when X and Y have the joint PDF fx,y (x,y) = 2 for 0<=x<=y<=1, and 0 otherwise. here is my solution...
  18. V

    Joint PDF of Random Variables X & Y -1 to 1

    for part A) i know ur suppose to take the integral with respect to dx, but I'm not sure what the limits are.
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    Sensor project relating to thermistor

    thank you for your response... i want the output to be in digital, and it should display the temperature vs. time. initially, i was thinking of doing a temperature sensor using an LM75, FPGA, and verilog...and display it on a 7 segment display. But it is just too hard. Do you know of...
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    Sensor project relating to thermistor

    Howdy, I'm want to make a sensor dealing with thermistors, and i just don't know where to begin...Can someone please help me get started? The project can be anything...but I am leaning towards measuring the temperatures vs time. using thermistors. Any help would be greatly appreciated.
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    Joint PDF of Random Variables X & Y -1 to 1

    Hi, I really need help with joint PDF, if anyone can help, that would be super! :smile: Random Variables X and Y have joint PDF fx,y (x, y) = 1/2 if -1 <= x <=y <= 1, and it is 0 otherwise a) what is fy (y)? b) what is fx|y (x|y)? c) what is E[X|Y = y]?
  22. V

    Autocorrelation, expectation, moment

    What is the relationship between Expectations, Moments, and Autocorrelation. Can somone please please give me some examples? thanks
  23. V

    Testing hypothesis and significance level

    Let N be the number of flips of a coin up to an including the first flip of heads. Develope a significance test for N at the alpha=0.1 to test the hypothesis H that the coin is fair. Can someone please help me with this statistics problem? I have no clue how to start it. Thank you :smile:
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    Confidence interval

    What is the 95% confidence interval for 100 ohm resister with 10% tolerence? Here is my work so far, can someone please tell me if I am doing it wrong or right? Thank you in advance. from table 95%: k = 1.96 100 * 0.1( which is the 10% tolerance) = 10 10 / sigma >= 1.96 Sigma <=...
  25. V

    Difference in probability and statistics?

    i think i understand what you guys are saying...thank you for your responses. :smile:
  26. V

    Difference in probability and statistics?

    Hello, Just wondering what's the difference between probability and statistics? I can't seem to grasp the concept of it, can someone please explain the difference to me in Lehman's term? Also can someone give me an example of each? thanks in advance
  27. V

    Need help with electromagnetics

    Hi, once again i need help with electromagnetics. :grumpy: if anyone can help, it would be greatly appreciated. here is teh problem: The radius of the core and the inner radius of the outer conductor of a very long coaxial transmission line are r(i) and r(o), respectively. The space...
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    Need help with electromagnetics

    hi, i figured out how to do this problem using only took me 2 hours LOL, but i finally figured it out. Thank you for your comment...i will try to look for the particular book...the only textbook that I am using rite now is Fundamentals of Engineering Electromagnetics by David K...
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    Need help with electromagnetics

    Hi, I was given this problem, but i just don't know where to start, i looked through numerous websites, and 3 books as reference, but i can't find anything that is related to this problem. Any help would be appreciated. here is the problem: A microwave structure has the cross section...
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    Dual sensitivity problem involving transducer (ECE)

    Hi, I have a question about calculating the error of the transducer. A pressure transducer exhibits a temperature sensitivity of 0.05 units per degree Celsius and a pressure sensitivity of 5 units per MPa. If the temperature changes 30 degrees celsius during a measurement of a pressure of...
  31. V

    Learning about self-excited and separate shunt generators

    hi, I'm currently learning about self-excited and separate shunt generators, and I'm having a hard time comprehending the residual magnetism. i was just wondering if a generator have lost all of its residual magnetism, can it still build up an output voltage? can someone explain this to...
  32. V

    Adding Trigonometric Functions: Get the Answer Here!

    yes i want to combine them into one...does anyone know how to combine it? and if they do, and you give me some tips? thanks
  33. V

    Adding Trigonometric Functions: Get the Answer Here!

    Hi, wat would you get if you add these: 3cos(600*pi*t) + 5sin(1000*pi*t - 45degrees) + 5sin(1200*pi*t)? thanks in advance...
  34. V

    Logic Function Using 74LS151

    Thank you for both of your help. YOu've cleared up some of the "stuff" that was a little unclear to me. Thank you!
  35. V

    Logic Function Using 74LS151

    ok, so i used A C D as the inputs where A is the most significant bit. For B, i put it into a 2 input nand gate, which gives B' and connect that to Do, D2, D4, D6...for the rest, i grounded them. I guess it is becuase B is the one that controls the mux?? Can you tell me if I am on the rite track?
  36. V

    Logic Function Using 74LS151

    i drew up the truth table of the boolean equation and i got 1's at 0000, 0010, 1000, 1010, 1011, 1111. So do i just put 1's at those numbers? and ground the rest?
  37. V

    Logic Function Using 74LS151

    i simplified the boolean equation and this is wat i got: B'D' + ACD is that correct?
  38. V

    Logic Function Using 74LS151

    Yes sir, There were like 3 parts to this question, but i figured out the first 2. THis third part is the one that's giving me a huge headache. I'm just a beginner and I'm not used to this whole "stuff".
  39. V

    Logic Function Using 74LS151

    Hello all, I'm having trouble with this certain problem... Given: f(A,B,C,D) = AB'D' + B'C'D' + A'B'CD' + ACD + AB'C'D' How do I build this logic function using one 74LS151 8-to-1 multiplexer and NAND gates? Any help would be appreciate. I just need to be pointed in the right...
  40. V

    Magnetic Induction vs. Field Strength

    What is the difference between the meanings of the terms magnetic induction and magnetic field strength? thanks in advance...
  41. V

    Why does the resistivity of a metal increases

    why does the resistivity of a metal increases while the resistivity of a semiconductor decreases with an increase in temperature? thanks in advance.
  42. V

    Ohmmeter and protoboard

    how can an ohmmeter be used to determined if two points on a protoboard are connected? thnks
  43. V

    Designing a Counter for 0-5-2-7-4-1-6-3-0 Using Gates and T-Flip Flops

    hi, can someone give me hints on how to design a counter that counts 0->5->2->7->4->1->6->3->0 using T-flip flop and some gates? I've been looking at this problem but i don't know where to start... thanks vinh