ECE 201 Spring 2009 Exam 1 February 16 2009 Division 0101 Elliott 9 30am Division 0201 Capano 10 30 pm Division 0301 Jung 11 30 am Division 0401 Capano 3 30 pm Instructions 1 DO NOT START UNTIL TOLD TO DO SO 2 Write your Name division professor and student ID PUID on your scantron sheet 3 This is a CLOSED BOOKS and CLOSED NOTES exam 4 There is only one correct answer to each question 5 Calculators are allowed but not necessary 6 If extra paper is needed use back of test pages 7 Cheating will not be tolerated Cheating in this exam will result in an F in the course 8 If you cannot solve a question be sure to look at the other ones and come back to it if time permits 9 As described in the course syllabus we must certify that every student who receives a passing grade in this course has satisfied each of the course outcomes On this exam you have the opportunity to satisfy outcomes i ii and iii See the course syllabus for a complete description of each outcome On the chart below we list the criteria we use for determining whether you have satisfied these course outcomes Course Outcome Exam Questions Total Points Possible i ii iii 1 4 13 14 5 8 9 12 42 28 28 Minimum Points required to satisfy course outcome 21 14 14 If you fail to satisfy any of the course outcomes don t panic There will be more opportunities for you to do so 1 1 Find the value of I in A 1 1 2 2 3 3 5 5 6 6 7 7 4 4 2 Find the equivalent resistance Req in 1 10 2 15 3 20 5 30 6 35 7 40 2 4 25 3 For the following network determine I40 1 1A 2 2A 3 3A 5 5A 6 6A 7 7A 4 4A 4 In the circuit below find the potential VBC VBC VB VC in V 1 1 2 4 3 9 5 25 6 36 7 49 3 4 16 5 For the circuit shown below find VAB VAB VA VB 1 0 V 5 2 V 2 1 V 6 3 V 3 1 V 7 3 V 4 2 V 6 For the circuit shown below find Ix Hint use mesh analysis 1 0 A 5 2 A 2 1 A 6 3 A 3 1 A 7 3 A 4 4 2 A 7 Using Nodal analysis determine Vc in the following network 1 10V 2 5V 3 0 5 10V 6 15V 7 20V 4 5V 8 Find the mesh current i2 for the circuit below in A 1 1 2 2 3 3 5 2 6 3 7 4 5 4 4 9 Using superposition principles find the contributions to the current ix from each source VS voltage source active CS current source active 1 ix VS 0 5A ix CS 2A 2 ix VS 1A ix CS 2A 3 ix VS 1 5A ix CS 4A 4 ix VS 16A ix CS 1 5A 5 ix VS 0 3A ix CS 0 75A 6 ix VS 4A ix CS 1A 7 ix VS 2A ix CS 3A 10 Use a series of source transformation to simplify the circuit shown below left into one consisting of a single current source in parallel with a single resistance right Determine Ieq and Req 32 32 Req 48 1A 8V Ieq A 24V 1 Ieq 0 5 A Req 12 2 Ieq 0 5 A Req 24 3 Ieq 1 0 A Req 12 4 Ieq 1 0 A Req 24 5 Ieq 1 5 A Req 12 6 Ieq 1 5 A Req 24 7 Ieq 2 0 A Req 12 6 11 Find the Th venin equivalent seen at terminals A B for the circuit shown below 100 A 100 100 A Req 100 7V Voc 150 B B 1 Voc 3 0 V Req 150 2 Voc 3 0 V Req 175 3 Voc 3 5 V Req 150 4 Voc 3 5 V Req 175 5 Voc 4 0 V Req 150 6 Voc 4 0 V Req 175 7 Voc 4 5 V Req 150 12 Find the Th venin equivalent resistance Rth for the circuit below in 1 1 2 2 3 3 5 5 6 6 7 7 7 4 4 13 The total charge q t conducted past a cross section of the wire shown is given in the plot Which plot below best represents the current i t in the wire 8 14 The voltage v t across an element and the current i t through the element are shown in the figure Which of the following plots best represents the power absorbed by this element 9
View Full Document
Unlocking...