Symbolic Expression - Introduction to Microelectronic Circuits - Exam, Exams of Microelectronic Circuits

Download Symbolic Expression - Introduction to Microelectronic Circuits - Exam and more Exams Microelectronic Circuits in PDF only on Docsity! Fall 2011 EE 40 Midterm 2 NAME: SSID: Instructions Read all of the instructions and all of the questions before beginning the exam. There are 4 problems in this exam. The total score is 100 points. Points are given next to each problem to help you allocate time. Do not spend all your time on one problem. Unless otherwise noted on a particular problem, you must show your work in the space provided, on the back of the exam pages or in the extra pages provided at the back of the exam. Simply providing answers will only result in partial credit, even if the answers are correct. Draw a BOX or a CIRCLE around your answers to each problem. Be sure to provide units where necessary. GOOD LUCK! PROBLEM POINTS MAX 1 15 2 25 3 40 4 20 “Pessimism is just an ugly word for pattern recognition.” -Anonymous Problem 1 Quickie (12.5 points) a) In the box below, provide a symbolic expression for v0 for t > 0 if v(0) = 4 V. “If a person offends you… do not resort to extremes, simply watch your chance and hit him with a brick.” - Mark Twain Problem 2 First order circuits (25 points) Consider the circuit below. a) What is the value of V0 at t = 0 +? Write It in the BOX BELOW. (5 points) R1 R2 L1 R3 b) Using whatever method you like (yes, anything, don’t raise your hand to ask if you can use XXX), provide a symbolic expression for the voltage V0(t) for t > 0 in the BOX BELOW. (17.5 points) b) Is there a value for R1 such that the resonant circuit can be critically damped for t > 1 μs? (5 points) Please show your equations clearly. If YES, write the value here: If NO, provide an expression that shows why not here: c) Determine the two relevant initial conditions of the circuit (5 points) Condition 1: Condition 2: