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Find Currents - Circuit Analysis - Quiz, Exercises of Computer Science

University of AllahabadComputer Science

These are the Quiz of Circuit Analysis which includes Load Resistance, Maximum Power, Current Sources, Matrix Arithmetic Refresher, Voltage Sources, Grounding, Reference Node, Arbitrary Circuit, Applying Ohm’s Law etc. Key important points are: Find Currents, Nodal Analysis Problems, Current Sources, Reference Node, Voltage Polarities, Resistive Branches,, Terms of Node Voltages, Resulting Simultaneous Equations, Actual Currents

Typology: Exercises

2012/2013

Uploaded on 03/21/2013

dheeraj
dheeraj 🇮🇳

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ECE#230#DISCUSSION#3#
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1.Find!the!currents!i1,i2,i3!and!i4:!
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2.Find!Vx,Is,Iin:!
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Technique#to#solve#Nodal#Analysis#Problems#with#current#sources:#
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• Consider!a!circuit!with!n!nodes!
n Select!a!reference!node.!Label!the!remaining!n"1!nodes.!
n Assume!current!and!voltage!polarities.!
n Write!KCL!for!each!of!the!n"1!nodes.!!
n For!resistive!branches,!express!the!current!in!terms!of!node!voltages!
and!resistance.!
n Solve!the!resulting!simultaneous!equations.!
• With!the!node!voltages!known,!the!actual!currents!can!then!be!determined!
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ECE 230 DISCUSSION 3

1.Find the currents i1,i2,i3 and i4: 2.Find Vx,Is,Iin:

Technique to solve Nodal Analysis Problems with current sources:

  • Consider a circuit with n nodes n Select a reference node. Label the remaining n-­‐ 1 nodes. n Assume current and voltage polarities. n Write KCL for each of the n-­‐ 1 nodes. n For resistive branches, express the current in terms of node voltages and resistance. n Solve the resulting simultaneous equations.
  • With the node voltages known, the actual currents can then be determined

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Techniques to solve SuperNodal Analysis Problems(Voltage sources): Consider a circuit with n nodes and m voltage sources n Select a reference node. Label the remaining n-­‐ 1 nodes. Assume currents and voltage polarities n Treat each voltage source and connected nodes as a supernode, and write n-­‐m-­‐ 1 KCL equations. For resistive branches, express in terms of node voltages and resistance. n Write KVL equations for the m supernodes n Solve the resulting equation 3.Find V1,V2,V3,V4(SuperNode Analysis)

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