sample final-2007-soln-hints

sample final-2007-soln-hints - Engr 260 Circuits Devices...

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Engr 260 -- Circuits & Devices – Sample Final Name: _____________________________ 1. For the given circuit, determine the current in the 6- Ω resistor using: a) superposition, b) nodal analysis, c) mesh analysis, d) source transformation. Answer: 42/13 A
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2. For the circuit shown below: a. Determine the Thèvenin equivalent circuit with respect to terminals a-b. b. What value of load resistor R L connected to a-b will give the maximum power to the load. c. Find the power delivered to the load if R L = 10 Ω . Ans: V TH =1.19 V, R TH =0.4762 ohms
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3. Find the voltage across the inductor as a function of time, for t>0. Answer: t e t v 20 4 ) ( = V
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4. The switch shown has been open for a long time when it was closed at t=0. Find the current ) ( t i as a function of time. Answer: ) 1 ( 5 . 2 ) ( 100 t e t i = mA
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5. In the circuit shown, calculate v o if v s = 0. Answer: v o = -1.6364V
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6. For the circuit shown, the voltage source supplies a voltage v tt () cos ( ) = 20 1000
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This note was uploaded on 10/12/2008 for the course ENGR 215 taught by Professor Enriquez during the Spring '08 term at San Mateo Colleges.

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sample final-2007-soln-hints - Engr 260 Circuits Devices...

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