| NETWORK SYNTHESIS |
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IC-208 NETWORK SYNTHESIS (B.Tech 4th Semester,2121) Time : 3 Hours Maximum Marks : 60 NOTE:- This paper consist of Three Sections. Section A is compulsory. Do any Four questions from Section B and any two questions from Section C Section-A Marks : 20 1(a) What are the various types of filters? Mention briefly. (b) Explain, what is design impedence of filters. (c) Draw the circuit of a constant k low pass filter. (d) Write the design equations of a constant k type high pass filters. (e) Explain the functioin of an attenuator. (f) Explain the terms cut set and cut set matrix. (g) Explain with the help of a simple example the terms free of a network graph and tree branch. (h) Examine whether the functioin z(s) = s +2 / s2 + 5 is positive real or not? (i) Test the polynomial q(s) = s2 + 5s + 9, if it is Hurwitz. (j) State the essential elements of realizability. Section-B Marks:5 Each 2. Explain in detail the basic loop incidence matrix. 3. Explain the circuit of a simple band elimination filter. 4. Design a constant k high pass π section filter having cut off frequency fc = 8 kHz and nominal characteristics impedence Ro = 500 ω? 5. Examine and state with resons whethewr z(s) = 2(s2 + 1)(s2 + 9)/s(s2 + 4) is an L-C impedence functions. 6. State the properties of opsitive real functions. Section-C Marks : 10 Each 7. Compare the attenuation frequency characteristics for m-derived filters (low pass and high pass) for different values of m. 8. Using graph theory find the currents through and voltages across all branches of the network shown below:  Foster form of the equilent network. |