HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY – FACULTY OF ELECTRICAL AND ELECTRONICS ENGINEERING INTRO TO ELECTRICAL AND COMPUTER ENGINEERING (ECE110) MIDTERM EXAMINATION Semester (2014-2015) Duration: 60 Student’s Name Score Student ID Number Department of Electronics Engineering Lecturer Dr Le Chi Thong INSTRUCTIONS:  Answer on this question sheet  Lectures, class notes, books, laptops, iPads, … are NOT accepted  Arithmetic-only calculators are accepted  Show all your work, e.g., your solution process, the equation(s) that you use, the values of the variables used the equation(s), …  Include the unit of measurement in each answer  Do NOT communicate with any other students Problem a) Compute the variation of charge from to 11 sec for the following current: (i) I = mA (ii) (0.5 points) (1.0 point) I [mA] 11 t [sec] Page of HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY – FACULTY OF ELECTRICAL AND ELECTRONICS ENGINEERING b) Compute the period, of the following signal (1.5 points) V [V] T= and t [sec] 12 15 VAve = VRMS = Problem Find the resistance between A and B (1.5 points) RAB = Page of HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY – FACULTY OF ELECTRICAL AND ELECTRONICS ENGINEERING Problem Use the following circuit for this problem a) Find the value of V1, V2, I1, I2 and I V1= V2= I1 = I2 = (1.5 points) I= b) Compute the power of all elements in this circuit and specify the elements are source or load (1.0 point) 10V element 5Ω element Power Source/Load Page of 5V element 10Ω element HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY – FACULTY OF ELECTRICAL AND ELECTRONICS ENGINEERING Problem a) Find the IV characteristic of the circuit below Given V1= V; R1= Ω; R2= Ω; R3= Ω b) Find the IV characteristic of the circuit below Given I4 = A; R4= Ω; R5= Ω (1.5 points) (0.5 points) c) Find the values of I2 and V2 when circuit in a) and circuit in b) are connected together (1.0 point) V2 = I2 = Page of