Exam 3 Solutions - Circuit Analysis and Design | ECE 225, Exams of Electrical Circuit Analysis

Download Exam 3 Solutions - Circuit Analysis and Design | ECE 225 and more Exams Electrical Circuit Analysis in PDF only on Docsity! ECE225 EXAM #3 – SOLUTIONS SPRING 2009 Instructions: 1. Closed-book, closed-notes, open-mind exam. 2. Work each problem on the exam booklet in the space provided. 3. Write neatly and clearly for partial credit. Cross out any material you do not want graded. Name: Problem 1: /20 Problem 2: /25 Problem 3: /30 Problem 4: /25 Total: /100 + − V (s) o V (s) i 2 − + Z (s) 1 Z (s) + − V (s) o 2 − + + − i V (s) − Z (s) 1 Z (s) + Vo(s) = − ( Z2(s) Z1(s) ) Vi(s) Vo(s) = ( 1 + Z2(s) Z1(s) ) Vi(s) 1 Problem 1 (20 Points) Identify each of the transfer functions below: 0 20 40 60 −20 −40 −60 ω(rad/s) dB 20 200 (b) H (s) = 2 0 3 500 (a) H (s) = 1 0 20 40 60 −20 −40 −60 ω(rad/s) dB (c) H (s) = 20 100 100(1+s/50) 2 2 s 100 0.1(1+s/2) (1+s/20) 3 3 s (1+s/100) 2 (1+s/1) 2 2 (1+s/5) (1+s/500) 10 40 60 −20 −40 −60 ω(rad/s) dB (d) H (s) = 4 2 10 100 1000 1 5 0 20 40 60 −20 −40 −60 ω(rad/s) dB 50 2