m1w01 - t o 0.45 cos(1000 t Circuit for Problem 2 EE 320...

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EE 320 Winter 2001 Prof. Clymer Midterm 1 January 26, 2001 50 minutes Please write out the EE Honor Code Pledge: “No aid given, received or observed,” on this exam booklet and sign your name before turning in your exam.
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EE 320, Midterm 1–January 26, 2001 2 1.) (30 pts) For the diode circuit shown below, at t = 0 the diode is operating in reverse bias mode . In your own words , explain how you can determine if the diode ever changes to forward bias mode. Can you actually make this decision without knowing the resistor values? Explain why. R 1 R 2 R 3 D 2.5 sin(10 t ) ~ + _ Circuit for Prob. 1
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EE 320, Midterm 1–January 26, 2001 3 2.) (35 pts) For the circuit shown below, L = 0 . 1 H and C = 20 μ F. Find the cosine form of i o ( t ). v ( t ) a L 5 v ( t ) a C i
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Unformatted text preview: ( t ) o 0.45 cos(1000 t ) + _ Circuit for Problem 2. EE 320, Midterm 1–January 26, 2001 4 3.) (35 pts) For the circuit shown below, the switch is open at t = 0-and closes at t = 0. At t = 0-, the voltage on the capacitor is 5 V. Also, R = 100 Ω and C = 25 μ F. a.) Sketch the circuit for t ≥ 0. b.) What is i c (0 + )? c.) Find a di±erential equation for i c ( t ) for t ≥ 0. (Note that you do not have to solve the di±erential equation.) v c + – i c t=0 10 V R C Circuit for Problem 3. EE 320, Midterm 1–January 26, 2001 5 (blank page for calculations) EE 320, Midterm 1–January 26, 2001 6 (blank page for calculations)...
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m1w01 - t o 0.45 cos(1000 t Circuit for Problem 2 EE 320...

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