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Register Number SATHYABAMA UNIVERSITY (Established under section 3 of UGC Act, 1956) Course & Branch: B.E - EEE Title of the Paper: Computer Aided Design Sub. Code: 6EEE02(2006) Date: 08/03/2011 Max. Marks: 80 Time: 3 Hours Session: FN ______________________________________________________________________________________________________________________ PART - A (10 X 2 = 20) Answer ALL the Questions 1. What is the function of format command? 2. What are the uses of function files? 3. Write the expression for current in RL transient circuit. 4. Write the ‘h’ parameter equation for two port network. 5. Define Slew rate. 6. Plot V-I characteristics of Diode Using Matlab. 7. What are the two main data types in Verilog HDI? 8. What is the difference between a gate installation and a module installation? 9. What is overloading in VHDL? 10. What is library clause and give its syntax? PART – B (5 x 12 = 60) Answer All the Questions 11. A 3-bit A/D converter with analog input X and digital output Y is represented by the equation. Write a Matlab program to convert analog signal X to digital signal Y. Assume input X equation and output Y equation. (or) 12. (a) Explain the INPUT and OUTPUT commands. (b) Write Matlab function to obtain the root of the quadratics equation. 13. Find the potential difference between nodes 1 and 2 and write MATLAB coding to solve the same. (or) 103 10 14. Given Z Parameters = all in which is representative 6 4 10 10 of a transistor operating in CE configuration, determine V, I, power gain, input and output impedance. Two ports may be viewed as driven by an ideal sinusoidal source Vs with 500 resistance and terminated in 10k load resistor. 15. For a full wave rectifier with RC Filter shown V(t) = 20 Sin(120t) and R=100K and C=100F use the Matlab to find the peak to peak value of dc output voltage. (b) Discharge time of the capacitor. Write the Matlab program and solve. (or) 16. For a NPN transistor with emitter area 5.5mm2 f=98, r=.35, Vaf=250 and transport current density is 2 x 10-9 A-mm2. Use the matlab to plot the output characteristics for Vbe=.65 V and assume the temperature of 300 K. Assume the necessary datas if needed. Write the Matlab program and solve. 17. Give a gate-level description of a 4 to 1 multiplexer circuit. (or) 18. Write a decade counter in the structural style of modeling using VHDL. 19. Write in detail about the package declaration and package body. Write a simple program enumerating this concept. (or) 20. Write a VHDL code for decimal to BCD encoder.