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Robertazzi-271-midterm-07

Robertazzi-271-midterm-07 - Name Midterm ESE 271 Robertazzi...

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Unformatted text preview: Name: Midterm ESE 271 Robertazzi Summer 2007 Show all work for full/ partial credit. Questions 1-2: 10 points each, Question 3-5: 12 points Max=56l50 points (6 bonus points) Part A: (Hand in Separately!) 1. Find the open circuit voltage, short circuit current and Thevenin/Norton impedance. Then draw the Thevenin and Norton equivalent circuits. Name:_________ 2. Find Vout as a function of V1 and V2. You may use the formulas for the lefi two circuits but show the steps in any work beyond that for potential partial credit. wow Name: 3. Solve using superposition (killing all but one source at a time). Draw appropriate circuit diagrams. Find i by first findingb la (the current in the 4 ohm resistor due to the voltage source only) and i (the current in the 4 ohm resistor due to the voltage source only). fl“, £41 V’ H“ 9m )«44 Pile 3 (Hand in separately!) Name: 4. (a) Write nodal equations. Note also that the resistors are labeled with their conductances (inverse resistance in Siemens). (b) Simplify the equations. How many equations do you need to solve? Solve the equations for nodal voltages using determinants. Show steps. V} VL V3 3 5 Si‘emenj ‘15 .‘Nv a 2A 5. At time 0 the switch opens. Prior to time 0 the switch was closed for a long time. a. Find vL(0-) and i(0-). Show any calculations. Draw a circuit diagram. b. Find vL(0+) and i(0+). Show any calculations. Draw a circuit diagram. c. What are the values 0va and i as time goes to infinity (switch open for a very long time)? ‘lfl la 9 lJv v/ fi‘ 6 2 j /2 : [iv ._ w M ‘ (i " C. C CL 1 /( : M" /L J C/fhm ff o? m, JVAAV cl ...
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