11Fall_Exam1 - ECE 210/211 Analog Signal Processing Fall...

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Unformatted text preview: ECE 210/211 Analog Signal Processing Fall 2011 University of Illinois Basar, Franke, Peck, Trick Exam 1 Tuesday, Sept. 20, 201 l — 7:00-8:15 PM Name: Section: . 9 AM IO AM 1 PM 2 PM (curcle one) Class: . ECE 210 ECE 21 1 (circle one) Please clearly PRINT your name IN CAPITAL LETTERS and circle your section in the boxes above. This is a closed book and closed notes exam. Calculators are not allowed. Please show all your work. Backs of pages may be used for scratch work if necessary. All answers should include units wherever appropriate. Problem 1 (25 points) Problem 2 (25 points) Problem 3 (25 points) Problem 4 (25 points) Total (100 points) Problem 1 (25 points) (a) In the following circuit, find the load resistor RL which will absorb maximum power. 29 2i 10v (b) Find Re between a and b. a 0 Re F b 20 20 20 20 (c) Find i in the following circuit. 12V (d) In the circuit below, the maximum power delivered on RL is W. ZQ 1Q ZQ 1A RL Problem 2 (25 points) (a) In the following circuit, using the principle oflinearity and superposition, we can write the node voltage V as v = Av,+ Bll+ CI2 Use source suppression to find the constants A, B, and C. (b) In the following circuits, find the open circuit votage Vat, and the short circuit current lSC between a and b. 4V Q 1 ix 29 21‘ 29 4 B SC Problem 3 (25 points) For the op amp configuration shown, determine the requested quantities. Assume linear regime (ideal op-amp) operation. 75K (a) h =________mA (b) In terms ofIabeled voltages V0] and/or V02, write the mathematical expression for current l2. Draw a box around the equation you wish to be graded. (c) In terms of labeled voltages V0] and/or V02, write the mathematical expression for current I}. Draw a box around the equation you wish to be graded. (d) Using the results of (b) and (c), write the mathematical expression for ll in terms of labeled voltages V0. and/or V02. You do not need to simplify your equation. Draw a box around the equation you wish to be graded. (e) In terms of labeled voltages V0. and/or V02, write the mathematical expression for current lit Draw a box around the equation you wish to be graded. (1') Using the output circuit attached to the right-most op amp, write a second equation relating labeled voltages V0. and V02. You do not need to simplify your equation. Draw a box around the equation you wish to be graded. Problem 4 (25 points) The given circuit is in the steady state for t < O. (3) Find t: 0 ic ic(0‘) = 109% + M 2A 15:2 0.1F vc(t) v40") = “Q J ' (b) Find ic(0+) = vc(0+) = (c) For t > O the time constant (d) Find the steady state values of ic(t) and vc(t) when the switch is closed. I 9‘ 55 II V C. 55 ll (e) Below sketch ic(t) and vc(t) in the range t 6 (0,00). Label numerical values on the axes. ic(t) Vc(t) ...
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This note was uploaded on 04/04/2012 for the course ECE 210 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

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11Fall_Exam1 - ECE 210/211 Analog Signal Processing Fall...

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