Electrical Definition and 1000 Threads

I need recommendation about complex analysis book. As I'm electrical eng. student, it should cover everything one engineer need to know about that mathematical field, but without strict mathematical formalism :)

Voltage = 9.0 V, Current = 20 mA, Capacitor (C) = 10 microF, Resistance before (too high) [R_A = R_B] = 10 k Ohms. In a a-stable oscillator, calculating the resistance needed for two resistors (R_A = R_B) to discharge and charge a capacitor (C) so that a LED does not blow. Currently my circuit...

Hello everyone from PhysicsForums, At the moment, I'm nearly 90% of my first year completion in Finnish University of Applied Science. During my first year, I have acquired some basic knowledges about circuit analysis, Labview and MATLAB programming, basic mathematics and physics. For the next...

in 11kv /230 v delta /star connected distribution transformer neutral not connected to earh,then if we touch the one phase (ex:R phase)of secondery line, shall we get shock or not?

Im looking into getting an electrician... but it drives me crazy when I don't know why something is done a certain way. I bought a Bendpak 10000 lb automotive lift. the motor supplied is 220 single phase or 3 phase (i am using single phase) the motor for 220 single phase is supplied with a...

I have got this question stating that: Immersing a pair of gold electrodes into a NaCl salt solution in the presence of a fixed voltage causes the capacitance and current to: either increase, decrease, remain unchanged or increase briefly and then return to its original value.. I think that by...

It took me 15 minutes to read one page of my introduction to circuits book. It took me 8 hours to read 30 pages and I remember only about 10% of what I read. (meaning I can't really summarize to someone else what I learned after reading). It takes me at least 3 readings to grasp 50% of the...

Hello. Is this possible, or would I be missing out on a lot of groundwork? Any options? I'd like to work on anything involving space, like satellites and such. Thank you!?

How common is it for electrical engineers to not particularly like programming very much? A bit more background: I go to a school in which the electrical engineering and the computer science department are very much intertwined, and so there's a big focus on computers in the EE curriculum...

First off, thank you for spending your time to read this and respond. I'm quite aware that there have been other posts on this and I've read through nearly all of them, but I'm looking for a bit more personal advice.I started typing out a bit about myself and my experience thus far with college...

Copper ::: 60.7 x 106 S m^-1 Silver :::62.9 x 106 S m^-1 Gold :: 48.8 x 106 S m^-1 Why is the electrical Conductivity of these elements this way? I mean down the periodic table it should increase in case of GOLD but instead Gold is have far less value of Electrical Conductivity.

As I am sure everyone is aware, there are still folks who don’t believe SRT and GRT. While 99.9% of them are nut-jobs, there is at least one that I respect – Tom Phipps specifically. I am not familiar with any of his writing before the advent of the GPS satellites. In any case, he now accepts...

Homework Statement Hey guys, i can use some help with this problem: I don't really have issues with part A, its more of part B and C that i can use some help with Homework EquationsThe Attempt at a Solution

Hello. I have been contemplating whether or not I should start pursuing a degree in CE, EE, or Comp Sci. I currently work as a wildland firefighter and am not happy with what I do. I started to learn programming about 9 months ago with various online tools such as Codecademy and taking online...

Hello, I'm currently enrolled as a Dual-Major in Electrical & Computer Engineering. To be honest I'm more interested in the software and computing side of the aforementioned disciplines. But there are only 5 extra classes over my last 4 semesters I would have to take and they are...

More specifically, what happens and why when a magnet is brought close to a nonferrous charged object.

I was wondering if someone could recommend some electrical engineering books that help explain rectifier circuits and DC chopper circuits. I've read electrical circuit theory and technology by John Bird and electrical machines, drives and power systems by Theodore Wildi and both seem to lack in...

Homework Statement Devise the mean voltage and current in controlled and uncontrolled single device rectifier circuits with R-L series loads. Single circuit series circuit given of an AC voltage source, a uncontrolled diode, resistor, inductor. V = 240 v, F = 50 Hz, R = 10 ohms, L = 50 mH...

Currently in my 3rd year in college of engineering, and I recently got offered a HV electrician intern for the DoD. Is worth taking? Being that its different towards my degree.

I've been searching the Internet high and low looking for the ELECTRICAL conductivity of R11. There doesn't seem to be much info on the subject and I'm stuck. Does anybody know its conductivity and/or where I could find it out?

Hi there! Just say I have large square piece of some homogeneous resistive material like graphite. How would I go about determining the resistance between any two given points? Further, just say I supply a voltage across two arbitrary points, can I determine the voltage difference between any...

For instance, I was introduced to thevenin and norton theorems about 1-2 weeks ago and it seems like we're expected to rote memorize the algorithms on solving problems. There is no proof/logic explained in different circumstances. For instance, we're told what these theorems are and how they...

Im a recently graduated mechanical engineer and i just joined a construction company as an M & E engineer. i want to know the basics of electrical knowledge that a mechanical engineer should know. please advise me on this topic. i am willing to learn and expand my knowledge.

Thanks

Hello everyone, I am a junior year EEE student ( in a South Asian country ) and I will have to declare my thesis topic pretty soon. Anyway, the reason I am here is that I love Physics and want to migrate to something that is more heavy on the theoritical side. Things like particle physics...

Hi I'm new here basically thinking about getting a degree in EE, and the school that I'm interested has electronic engineering instead. Just wondering if I do the electronic engineering bachelor, you think I can still apply for MS in electrical if I don't have background in like power and...

I'm currently a second-year electrical engineering major (in the US). Next semester I'll begin to take almost exclusively classes involving different branches of electrical engineering. I've taken two digital design courses, a course on microprocessors, and I'm currently on my second "circuits...

What is the formula for speaker input/output? On a related topic, on a motor an input of x (electricity) equals output of y (movement) and an input of y (movement) equals output of x (electricity) x=y and y=x Is the theory of x=y / y=x applicable to speakers? x=electricity y=loudness

Homework Statement The tine sphere at the end of the weightless thread has a mass of .60g. It is immersed in air and exposed to a horizontal electric field of strength 700 N/C. The ball is in equlibrium in the position shown. What are the magnitude adn sign of the charge on the ball? Homework...

i am a 3rd year Mech batch doing my dissertation on developing an inductive sensor to determine wear in brake discs. As you know it works by inducing eddy currents into the disc and the are monitored by measuring the impedance of the coil. i am really struggling with understanding the impedance...

I need help. I am installing new networked alarm panels throughout a building. There is a room where one panel is and that panel is continually having components fail. While in this room it is also very common for me to receive a static shock when coming in contact with any metal. I realize...

Because there are only so many characters I can put in the title I will future explain down here. I want to do design/work on many things... I don't know how likely it is for me to do these things, but I want to work on electric motors, generators, nuclear reactors, Combustion engines, steam...

Hi All! A little background info. I'm working with cardiac pacemaking devices with the overall scope of implementing piezoelectric energy harvesters into the devices. I'm in the initial stages of research and development. Okay, so this is my conundrum: I have an output pulse circuit as shown...

Hi guys, I have completed my first year engineering courses and about to start my second year. I enrolled for computer engineering but have decided to change to either electrical or electronic engineering. So my main question is which is more harder between the two ? I know the main differences...

Here , I want to clear about the cause of electromagnetic or interaction torque.>! I am confused in two things.. I read that the flux produced by stator coil & rotor coil interacts , the interaction give rise to electromagnetic torque.. But how this interaction produce torque..?? Is it like...

I've always been fascinated by how a computer operates both through code and through its physical devices. This is my eternal struggle, I like both the software and hardware side of computers. I'd like to possible programming robots and use my electrical engineering design to know how to make...

I am taking an intro electrical circuits course which requires that I write extensive lab reports. I just completed a really simple lab about calculating resistance when configured in series and parallel, etc. In my intro I'm writing a short explanation about resistance, and resistors, and...

Dear PhysicsForums members, being currently in my final year of Austrian high school I have to decide what to pursue my Bachelors degree in. (Un)fortunately I have three huge interests. Those are Economics, Computer Science and Electrical Engineering. All of which are highly fascinating and I...

Dear readers, Firstly I would like to say that I'm a new member to the Physics Forum and I hope to meet many people who share my passion for science and, at present, engineering (because let's face it, science/engineering is awesome!). As a recent chemistry graduate at the University of...

Homework Statement Homework EquationsThe Attempt at a Solution I assumed there to be two supernodes. The first one was between V1 and V2. The second supernode was between V2 and V3. This is what i tried and i am not getting the right answers. Please can someone help me out! Apologies...

I am an electrical engineering undergrad student just finishing my first year. I have a love of physics and I was starting to wonder if it would be possible for me to stay in EE undergrad but change to physics for grad school. Is there enough physics in EE that I could make the switch?

Although it was drummed into me that electrical neutrality is preserved, I am perplexed by the phenomenon of radioactive decay. How is electrical neutrality maintained when electrons (beta particles) and proton-neutron sets (alpha particles) are being spit out by some elements. These particles...

electric transmission between 2 neurons is way faster than by chemical neurotransmitters... then why are there so few electric transmission based synapses in our body??

Homework Statement Two charges q = 9.0μ C are fixed in space a distance d = 1.5 cm apart, as shown in the figure. a) With V = 0 at infinity, what is the electric potential at point C? b) You bring a third charge q = 9.0μC from infinity to C. How much work must you do? c) What is the...

I recently got my Bachelor degree on Electrical Engineering and want to specialize in Telecommunications. My question is how could I become competitive against a Telecom. Engineer? Since I just have a very theoretical knowledge about analog and digital communications. What practical stuff should...

hopefully this post makes sense:/ I am in the process of creating a product that is a gag gift. The gag gift will be electrical and will be activated once the box that it is in is opened. I am wondering if anybody has any ideas on how I can get the product to recognize when the box is being...

Mentor note: Member warned about posting a question without the template 1. Find the electrical potential between A and B given that R1=R2=R4=100 Ohms; Power dissipated by R3 is 200 mW at 9 Volts [ code ] A---------R1-----------*------------------- | |...

I have questions based on my understanding on the home electrical system (USA). I am not a student, this is for my personal understanding. My understanding (please bear with me): Electrical power to the house Mains Panel comes from the secondary of the utility company transformer in the form...

Homework Statement Homework Equations 3. The Attempt at a Solution Z11 8 + 6 Z12 6 Z21 6 Z22 6 V1 = Z11 I1 + Z12 I2 V2 = Z21 I1 + Z22 I2

Pardon me if I stated the title incorrectly/ informally. I just want to say about the title is about the 220 V, 60 Hz source (present in our outlets also) in our house by which comes from nearby electrical post. I have four questions in this post/thread so kindly tell me if I need to edit this...