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NAME: ____________________________________________ COMPUTER ELECTRONICS END OF SEMESTER EXAM JANUARY 12, 2013 MR. SCIAME Directions: Answer 6 of the 7 questions. Each question is 20 points each. Max on the test is 110. Note: if you select question 6, you MUST do parts A and B. TYPE your answers directly onto the paper. 1. Fill in the following chart based on the accompanying diagram: P1 = WATTS V1 = P2 = WATTS V2 = P3 = WATTS V3 = PT = WATTS R3 = IT = AMPERES P3 = VOLTS VOLTS VOLTS % OF RT % OF PT 2. Create a EIRP chart based on the diagram below: T 1 2 3 4 5 E 30 V I R 2 k 6 k 5 k 15 k 15 k 1 P 3. Fill in the chart below based on the following information (Ignore The I1 and I2 in the diagram!) : T E I 100 V 20 mA R 1 1 k 2 8 k 3 2 k P 4 4. Fill in the chart below based on the following information: RL1 R1 RL2 R2 RL3 R3 IT R4 RT NOTE VT = 120 V; IB = 0.01 A 5. Based on the Wheatstone Bridge below, what will R4 be in the following situations: R3 A 6 k B 20 k C 60 k D 200 k E 2500 k 2 R4 6. (A) Please convert the following binary numbers into base-10 numbers: A. 00001111 B. 11100111 C. 10100101 D. 00110011 E. 00111100 6. (B) Please convert the following values to binary numbers. A. 27 B. 52 C. 100 D. 175 E. 248 Extra Credit: 2013 7. In the diagram below, what are the values of RTH and VTH? PORTFOLIO QUESTION ON NEXT PAGE → 3 PORTFOLIO QUESTION In the Diagram below, construct a EIRP chart for the following instances: A. RL = 10 Ω B. RL = 5 Ω C. RL = 30 Ω Find % efficiency in all cases. Which resistance gives maximum efficiency? 4