Read about electrical engineering | 188 Discussions | Page 3

  1. T

    Net Neutrality, Bandwidth, Speed, Physics, Greed?

    Net Neutrality is being overturned as ISP telecoms claim they need to throttle bandwidth and speed as too many customers want to stream HD videos and play HD online games. EM waves are fast and unlimited, so is Tiered Premium Billing absurd? ISP telecom expenses include transmitters...
  2. ramzerimar

    Programs Switching major to EE: is this a good move?

    I'm currently enrolled in a MechE course, at my third year, and it took a long time to discover that this is not the major for me. In my spare time, I've been learning electronics (Arduino) and programming, and I decided that I like this stuff better than my MechE classes. Most of my interest...
  3. J

    Engineering AC Circuits help

    Hey guys, I'm having trouble solving this particular circuit Thanks in advance. <Moved to Homework, no template completed>
  4. vinicius0197

    Courses Mechanical Engineer switching to CS or Electrical

    I'm on a sticky situation right here. I have almost completed my third year of a mechanical engineering degree and I'm just now realizing that I would prefer working with embedded systems/software. This happened after I start toying around with an Arduino and learned C and Python for fun's sake...
  5. V

    Engineering Power systems engineering

    So I am 21 years old, I only recently found out that I am interested in electrical engineering. I live in NYC and am heading into cuny city tech for my first semester. E.E is a very broad field and I think that going into power engineering would be a good career move because it cannot be...
  6. Mzzed

    Basic capacitor concepts

    If a capacitor is charged to 10V where the negative side is connected to ground (0V), when the capacitor is disconnected from the power supply on both the positive and negative sides; 1) Will the negative side of the capacitor still be 0V relative to the ground it was just connected to? 2) Say...
  7. Bassa

    Diode - Resistor Combination

    Helo, I am in an electronic course and we just started studying diodes. I am stuck on the following problem: Place a 100 ohm resistance in series with a diode, and plot current versus voltage across the series combination. I am also given the following values for the diode: n = 1, Is =...
  8. UMath1

    Engineering Engineering Degrees and Job Prospects

    I have been accepted to the UT Austin Cockrell School of Engineering for Mechanical Engineering in Fall 2017. I'll be starting as a sophomore because I have finished all my general education requirements. However, I am not entirely sure I want to stick to MechE. I have been considering Chemical...
  9. Jayalk97

    Summing op amp circuit help?

    Homework Statement Solving for this circuit here, where V = -5V Homework Equations The Attempt at a Solution I found the equation for a summing op amp like this one, plugged everything in and ended up with -3V, which is marked wrong. I'm really at my wit's end here and the homework has been...
  10. srinaath

    What are the effects of changing the speed of alternator?

    Homework Statement What are the effects of changing the speed of alternator? (elctrical synchronus generator) Homework Equations Ns=120*f/p; p-poles f-frequency Ns-synch speed E=4.44*f*phi*T phi-max flux linkage T-turns f-freq E- generated voltage The Attempt at a Solution from the above...
  11. akaliuseheal

    Calculating EMF in order for the powers to be equal

    Homework Statement In a circuit of constant current shown in the image, values are Ig=0.2 A AND R=750 ohm. What is the value of EMS of an ideal voltage source V for the powers of an ideal voltage and an ideal current source to be equal? Homework Equations Pv=PIg The Attempt at a Solution...
  12. akaliuseheal

    Calculating voltage which voltmeter is showing

    Homework Statement Schematic of circuit is not given, only the text which I translated into English. Using a voltmeter with internal resistance of 6k ohm, voltage between two points, 1 and 2 of a circuit of constant current, is measured to be 8v. Then, using a voltmeter with internal...
  13. C

    Help: Physics vs Engineering Physics vs EE / ME

    I'm a final year high school student trying to figure out what he wants to study in university. I have decided on an applied math double major with one of the above. My dilemma is between deciding to purse the passion I have for theoretical/ pure physics or an applied science as I would really...
  14. S

    Schools Getting a BSEE

    Hey everyone, new to Physics Forums and happy I've found it. To start, my name is Shane, I currently work for Applied Materials. We engineer, maintain, and support tools in the semiconductor industry. I'm 21 years old, and currently on the Global team. Meaning, I travel 90% of the time...
  15. E

    Engineering Electrical Machines DC Shunt Motor

    An 8.25 kW shunt DC motor is supplied with a terminal DC voltage of 300 V. The armature resistance of the motor Ra is 0.25 , and the field resistance Rf is 40 . The field winding consists of 1500 turns. An adjustable resistance Radj is connected in series to the field winding. Radj may be...
  16. D

    Beginner Question About Series Parallel

    How exactly do you tell if two elements are in series or parallel? I know that if two elements share two of the same extraordinary nodes then they are in parallel: But in this example I do not see that. I know for certain that the answer for Rt is: [ ( (R1 || R2) + R3) || R4 ] + R5
  17. N

    I Why a conductive shield doesn't block the magnetic field?

    Hi While studying the shielded wires, i noticed that the magnetic field of the inner conductor can penetrate the shield conductor (can be calculated in the region 3). However, the boundary condition of the magnetic field at the surface (between dielectric and perfect conductor) of a perfect...
  18. A

    MS vs PhD in Robotics

    Hello everyone, To start, I found this forum incredibly helpful throughout my college education thus far. This forum has helped me pick my major in undergrad back in 2011, helped me narrow down which graduate program to gravitate toward upon graduation in 2015, and now I have a continued...
  19. I

    Backward Impedance Matching

    Homework Statement https://scontent-lax3-1.xx.fbcdn.net/v/t34.0-12/14804959_10155526179417281_80533891_n.png?oh=649ee14155ac558b21c6553f003e418b&oe=5809EAA0 Homework Equations The Attempt at a Solution 1) I determined the input impedance of the first transmission line (Zin1). 2) I calculated...
  20. L

    Electrical Engineering conflict

    Hello everyone. I am a third year Electrical Engineering major and I am just starting to take some real EE courses such as Digital Logics and Microprocessors. I have to choose a track for electrical engineering and I am in a dilemma as I do not know which track I want to do. This falls under the...
  21. L

    I Really confused about voltage and some other quetions

    Please explain how or why (I have zero knowledge in physics).. 1. is Voltage the energy required by the elctrostatic forces between 2 points to move a certain quantity of charge between them? 2. Why is it called potential difference? Does this have to do with the difference in potential energy...
  22. A

    Thermochemistry & Gases in Electrical Engineering?

    I'm a first year electrical engineering student and in my General Chemistry class, every other week, we're required to write a paragraph about how each weeks material relates to your future career. As I am in electrical engineering, I don't see much relation to any topic. This week is...
  23. adamaero

    Predicting AC open-loop gain for an internally compensated op-amp

    Homework Statement An internally compensated op amp has a DC open-loop gain of 1,000,000 (V/V) and an ac open-loop gain of 40dB at 10kHz. Provide the expected gain in dB at 1kHz... Homework Equations Please help, I don't know what to use for an exact answer. The Attempt at a Solution Beyond...
  24. Metals

    How to find power dissipation of a resistor in this circuit?

    Here is an image with information: https://i.snag.gy/UMCRig.jpg I have calculated the total power dissipation as 11W. What I don't see is why R1 has a higher dissipation rate than R2/R3, and my main question is how do I calculate the power dissipation of R1? I get that R2/R3 are in series so...
  25. U

    Programs Undecided between Masters Degree in BME, EE or Applied Math

    Background story: In high school, I fell in love with mathematics especially AP calculus (mostly because many other subjects in the sciences were not well taught in my school). I would often spend hours trying to learn the math in detail (often going more in detail then necessary on my own...
  26. vinicius0197

    Engineering What is better for robotics: Electrical or Mech Eng?

    I know that robotics is a multidisciplinary field, requiring knowledge from many different fields of study. But I would like to know what would be the better path for a engineering seeking to work with robotics: it's mechanical or electrical engineering? I'm a student of MechE myself, and I have...
  27. A

    Studying Supplementary book for intro signal processing class

    The required textbook for my intro signal processing class is "Signal Processing First" by James McClellan. So far I like the book quite a lot because the author does a good job to explain the concepts clearly. However I feel like the book doesn't provide enough practice problems. I just want to...
  28. Umar Awan

    Transformer max current

    Note: I have a feeling this is below Electrical Engineering requirements, but I couldnt find a more suitable catagory, so I think I'll extort the advantages of a forum base with electrical understanding more than I think may be required(ofcoarse I know very little about the field, so I may fall...
  29. D

    Classical Electrical engineering books

    This fall i'm going to the university of electrical engineering and im looking for some good physics and math books concerning the following topics: Physics -Classical Mechanics ( level above Calculus 2) - Electricity and Magnetism ( level above calculus 2) -Electrical cirtcuits (specially...
  30. Woa90210

    What was most helpful understanding Signals and Systems?

    Hey guys! This is my first day on the forum so, hey! I'm a third year electrical engineering student and I'm really having some trouble with Signals and Systems so I want to know what helped other people understand it so that maybe I could try some of their methods. What were your biggest...
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