sample_final

sample_final - EE10 Sample Final Exam UCLA Department of...

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EE10 Sample Final Exam UCLA Department of Electrical Engineering Instructor : Prof. Gupta Spring 2011 Q1. (5 + 5 points) (a) The linear circuit (black box) is connected to the load resistor R L at the terminals a and b as shown on the diagram. If the RL = 2 kΩ , then the current through the load equals I = 8 mA. If the RL = 5 kΩ , then the current through the load equals I = 4 mA. Draw the Norton Equivalent of this circuit.
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(b) Find the Thevenin equivalent of the simple transformer circuit below.
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Q2 . (5 + 3 +2 points) Assume ω = 10 4 rad/sec. (a) Use source transformation to obtain the current I0. Express your answer in milliamps, both in the phasor notation (rectangular form) and in the time domain. (b) Draw a phasor diagram showing the voltage across 30ohm resistor, 4mH inductor, 5uF capacitor. (c) Graphically solve (roughly) for current through the 20 ohm resistor. You don’t need to calculate the exact value of the current. Just show it graphically.
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Q3 . (8 + 2 points) Consider the circuit with the following parameters:
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This note was uploaded on 06/17/2011 for the course EE 10 taught by Professor Chang during the Spring '07 term at UCLA.

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sample_final - EE10 Sample Final Exam UCLA Department of...

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