Network Definition and 464 Threads

Homework Statement http://learn.lboro.ac.uk/file.php/1844/Quiz_figures/Chins_Files/Q11.jpg In the above circuit V1=17 Volts V2=8.5 Volts V3=4.25 Volts I1= 4 Amps I2= 5 Amps R1=4.25 Ohms R3=6.375 Ohms R4=1.0625 Ohms R5=2.125 Ohms R6=2.125 Ohms Calculate the following: a) Magnitude of...

Homework Statement This is one part of a wider question, I'm only posting the part I'm having trouble with. $$ \begin{align} \text{Given an impedance network } B &= \frac{Z_1 \parallel Z_3}{Z_2 + Z_1 \parallel Z_3} \\ \text{show that: } \frac{1}{B} &= 1 + \frac{R_2}{R_1} + j\frac{\omega CR_2}{1...

Homework Statement In the above diagram, calculate the total resistance between A and C R1 = R2 = R3 = R5 = 3.3 Ω R4 = R7 = R8 = 6.6 Ω R6 = R9 = R10 = 2.4 Ω Homework Equations Sum/Product The Attempt at a Solution Can anyone give me an insight on where to start for this? So my current...

Homework Statement There's nothing a problem actually , all I wanted to know is what is the physical significance of network theorems , why are we actually studying them..?Homework EquationsThe Attempt at a Solution generally , we use network theorems for simplifying the circuit..

Hi All I have done transient stability simulations on isolated electrical network using ETAP 7.5 software. Problem: On buses Faults generators return to stable stade But on cable faults, rotor angle is diverged so the system is not stable. To be noted that we have 2 SOLAR generators of 5MW...

Problem: In the circuit shown in the figure below, the capacitors C1 and C2 have a capacitance of 45µF. C3 and C4 have a capacitance of 90µF. The two terminals A and B on the left have a potential difference of 25V (Sorry - had to quickly draw it, could not save/find image) (a) Find the...

Hello I'm new here as you can tell by my username and I had a question on some research I'm doing. Now it is common knowledge that brain cells and even whole neural network can be transplanted. But my question is on the neural networks. Like for example I was reading that sxuality is determined...

I can't get this last problem in the chapter. I am asked to find ##I_x## in the following network: My first hunch was to apply KCL to the node above the ##2I_x## source: ##10 + 2I_x - \frac{V}{2} - 3 + I_x + \frac{V}{5} + \frac{V}{10} = 0## Where I have assumed the voltage ##V## is across...

I was able to do most of the exercises, but this one gave me some trouble. I want to find ##V_o##. My gut is telling me to use KCL, and applying it to the top left node above the 6k resistor yields: ##\frac{V_o}{2000} + 2 \times 10^{-3} - \frac{V_s}{6000} - \frac{V_s}{3000} = 0## I am now...

I have been told that if the line connects breaker to breaker, it is considered to be radial; but, this doesn't make sense to me. If a line is connected by two feeders then there would be two sources of power, hence "Radial". I'm not sure if I'm missing some minute detail that makes the whole...

Homework Statement A current i(t) as shown in the figure is passed through a capacitor. the charge (in micro coulomb) acquired by the capacitor after 5 micro seconds Homework Equations here slope is given for 3 microsecond ie. current=dq/dt = 2.5 charge upto here = 3*2.5=7.5 micro...

Homework Statement The current Ix and Vx in the below circuit are The Attempt at a Solution Volt at node A= V. Applying KCL at node A, V/5+ ((V-20) /10) -7=0, 3V =90, V=30.

I want to implement circuit that can be operate throw web browser there are many network controller but I want to use ARM controller I need advice I mean where we can use this type of circuit ,tell me commercial use of network enabled device

Hello guys i want to compose a code (in C++) for Ns3 to simulate the fuctionality of sliding window , maybe can help me somebody!

Why do we need a two port network? Is there something which a one port network lacks? Why we needed a two port network connection?

Hi folks, I'm interested in unlocking a computer for network folder sharing. After I installed ZoneAlarm for firewall, I haven't been able to open folders from the computer running it. "Locked" computer information: - Windows 7 - ZoneAlarm (zones on Medium and all IP's of interest have...

Hello, I need some advice regarding my plan to apply for a masters in EE. I have a BS in physics, and I have been in the workforce for about 5-6 years now. I work in the IT field, with a focus on networking, security, LAN/WAN, etc. I have been offered an exciting opportunity of becoming...

Homework Statement If we have a two-port network, a source with impedance Zs and a load with impedance Zl, I think that the conjugate of Zg and Zl (normal, not conjugated) should be equal to the image impedances of the network. The problem is that I was told that instead of the conjugate of...

Homework Statement This is out of a book on Excel, where we are solving simultaneous equations. However, how do we find the equations for this network in the first place? (image at bottom) Homework Equations ∑ I= 0 ∑ V =0The Attempt at a Solution i1 + i2 + i3 = 2 i6 + i7 +i10 = 3

Hello guys, I have to make a short circuit calculation for school but I am a bit lost.. I have a copy off the IEC61363 and internet connection as my help lines. Homework Statement The network consists of a generator feeding to switchboard A with a cable in between, on the same...

Homework Statement Design and show a foster 1 network z=(x^2+4)/(x(x^2+2))Homework Equations The Attempt at a Solution So first I did the partial fraction expansion and I got (2/x)-(x/(x^2+2)). Next I got everything in the denominator so (1/x/2)-(1/(x+(2/x)) when I do this though I get all...

Homework Statement Compute values for R and C such that the total series impedance Z=500\angle(-36.1o) when f=10kHz. Homework Equations ω=2\pif KVL ZC = -j*(1/(ωC)) = 1/(jωC) where j=\sqrt{-1} The Attempt at a Solution Seems like a pretty straightforward problem, I seem to...

Hi, this is part of an application note entitled "Low-Noise Amplifier Stability Concept to Practical Considerations" from Maxim. Could you help me with the question in the picture? Thanks. Source: http://www.maximintegrated.com/app-notes/index.mvp/id/1849...

Homework Statement For the capacitor network shown in Fig. P24.55, the potential difference across ab is 12.0V. Find (a) the total energy stored in this network and (b) the energy stored in the 4.80-μF capacitor. Homework Equations C= Q/V U= Q2/2C = .5CV2 = .5QV Capacitors in Series: 1/Ceq =...

Hello guys. This is my first time posting in PF. So, let me tell my problem first. I have just finished high school and I will be entering college soon. The problem is, I cannot decide which course suits me the best. Whether it is Network Engineering or Telecommunication Engineering. To tell...

Homework Statement Consider a network of n queues with a Poisson arrival process of parameter t from outside the network, and independent exponentially distributed service times of parameters r1 to rn. Customer that first arrived to the network initially join queue i with probability Pi...

Homework Statement http://imageshack.us/a/img819/9791/sh5k.jpg Given the network [above], find the complex power supplied by the source, the power factor of the source, and the voltage Vs(t). The frequency is 60 Hz. Homework Equations ω=1/f Pf = cosø P = IV PL =...

Homework Statement Design a π section symmetrical attenuator to provide a voltage attenuation of 15 dB and a characteristic impedance of 600 Ω. Zc=600Ω,\alpha=15dB (attenuation) Z1,Z3=? Homework EquationsThe Attempt at a Solution \alpha[dB]=20log(Vin/Vout)=15 \alpha=5.623...

hi all, So here I am reading a paper "A System for the Detection of Pigment Network in Dermoscopy Images". I want to ask what actually is a pigment network? thanks

Please suggest what does N1 and N2 mean in the attached dc network.

Homework Statement Construct and test the ∏ section symmetrical attenuator. Measure and record the Input & Output Voltages of the attenuator and determine the attenuation in dB. Homework Equations Vout = Vin * [ R2 / (R1 + R2) ] Decibel Attenuation (dB) = 20LOG10(Vout / vin)...

I have seen articles dealing with the growth of brain cells using stem cells. I have also seen, in the past, research attempting to mimic neural connections (using traditional silicon chips) for use in computing. I have searched for any mention of research into using actual living brain cells...

[/SUB]Homework Statement Design a ∏ section symmetrical attenuator to provide a voltage attenuation of 15 dB and a characteristic impedance of 600 Ω. Homework Equations ZS = ZL = Z R1 = R3 = Z (K + 1 / K -1) R2 = Z (K2 - 1 / 2 K) The Attempt at a Solution Z = 600Ω K =...

Homework Statement Calculate the insertion loss for the network in the diagram? Homework Equations 20log(N)dB N = R0 + R1 / R0 - R1 The Attempt at a Solution N = R0 + R1 / R0 - R1 N = 141.42 + 100 / 141.42 - 100 N = 241.42 / 41.42...

Homework Statement Calculate the Characteristic Impedance (Z0) of the two port network? Homework Equations When port 2 open-circuit, I2 = 0 So, Z11 = V1 / I1 = 40(60) / 100 = 24 Ω When I2 = 0, thus V2 V2 = 40 / 20+40 V1 = 0.666 V1 Z21 = V2 / I1 = 0.666 V1 / (V1...

Homework Statement Calculate the characteristic impedance ( Z0) of the two port network shown below: Could you help me with this question please.Homework Equations The Attempt at a Solution

Homework Statement Consider a power grid consisting of electricity producers that are connected to consumption points on the grid. The consumption points are affiliated with regional retail power companies that then distribute the power to their end users. The undirected graph (attached)...

Hi! I have a few devices in my home like a desktop, a laptop, a printer, a tablet(Nexus 7) and a smartphone. I usually need transfer files between the device so i use data cables, usb drives or memory cards. But I have a broadband router in my home which I think can be used to set up a wireless...

Homework Statement Find Vo/Vin.I understand perfectly how to do this question. It simply involves an application of ohm's law to find i1, then KVL around the first loop. KCL at the top, and KVL around the second loop. Then to solve simultaneously. My issue however Is why the mechanics of...

I'm trying to make a neural network in python, but I'm having a lot of trouble. Specifically after I have the network set up, what weights to initially assign to each neuron's inputs, the threshold, and evolving the networks to do what you want. Here is my neuron class. class Neuron...

So I am currently a computer engineer student, with multiple IT certifications (A+, N+, S+, MCP, MCSA, MCSE, CCNA) i will finish my degree this December and I am trying to make a decision, I am currently working as a software engineer for a small company where the top ill make after i graduate...

two-port network transmission parameters?? Homework Statement Homework Equations t[A B]=[t11 t12] [C D]=[t21 t22] The Attempt at a Solution so, first thing i did was find the equivalent capacitance/inductance. C(eq)=-j0.5 and L(eq)=j0.5. using these values as I was confused by parametric...

I'm working on a project which deals with temperature control of a room. the idea is to control temperature within a limit. I have prior data which i used to train a neural network which is 99.5% accurate. there are 5 inputs (x , y , z , A , B) and there is one output (T). Now I want to...

I'm working on a project which deals with temperature control of a room. the idea is to control temperature within a limit. I have prior data which i used to train a neural network which is 99.5% accurate. there are 5 inputs (x , y , z , A , B) and there is one output (T). Now I want to...

I don't have access to computer right now so here's the link to my working http://tinypic.com/r/2nhowoo/5 . According to the answer I shouldn't have (s/RC) term on the numerator, otherwise all good. Can anyone please point out where i have gone wrong?

I developed a multi-layer perceptron so I could better understand the underlying structure as well as modify it easily versus MATLAB's nntoolbox generate code. I have successfully trained the network for a given set of inputs and targets. The question now is how do I use this trained network...

please help me solving 2 electrical network problems file:///C:/Documents%20and%20Settings/user/My%20Documents/My%20Pictures/From%20RSPC_Pashya/Camera%20roll/WP_000127.jpg In first problem I have to find current through 5Ω resistor using Thevinins eq. So, in first step i removed 5Ω...

Could someone explain what network motifs are and how they are different from clusters because wherever I've searched, both are defined as sub-communities within a network.

I've written a program for character recognition but now upon testing I am unsure about a couple things. I'm having problems with training and simulating the network. Here is my interpretation of how network training goes. Suppose I want to recognize the letters in the ABCD image attached. In...

I'm working on a fingerprint recognition project and have run into a road block. As of now, I am using a 3 layer feed-forward neural network to find the minutiae in a fingerprint. If a minutiae is detected, it's location in the image (row, col) and the type (n types) of bifurcation is noted...