II/IV B.Tech Degree Examinations, January 2014
First Semester
Network Analysis and Synthesis
Time : 3 hours
Maximum Marks : 60
Answer question No.1 Compulsory
Answer ONE question from each Unit
1. Briefly explain following [12 x 1 = 12M]
a) What is two port network?
b) What is transfer impedance?
c) Define non planar circuit?
d) Define characteristic impedance?
e) Which parameters are widely used in transmission line theory?
f) What are the requirements of an ideal filter?
g) In which type of filter the attenuation is sharp?
h) In m-derived filter what is the relation between resonant frequency with respect to design aspect?
i) Draw L-type attenuator, what is the purpose of it?
j) What is the natural response of a circuit?
k) What do you mean by network synthesis?
l) Define band elimination filter?
UNIT - I [1 x 12 = 12M]
2. a) For RC two port network, compute G_{12}.
2. b) Explain about transmission parameters & Hybrid parameters? (OR)
3. a) What are poles & zeros? Explain about time domain behavior from the pole and zero plot.
3. b) The hybrid parameters of a two port network are h_{11}=1 K; h_{12}=0.003; h_{21}=100; h_{22}=50 micro ohms. Find V_{2} and Z parameters of the network.
UNIT - II [1 x 12 = 12M]
4. a) Design a m-derived low pass filter having cut-off frequency of 1KHz, design impedance of 400 ohms, and the resonant frequency 1100Hz.
4. b) Explain about
i) Properties of symmetrical network
ii) Filter performance. (OR)
5. a) Design a m-derived T-section and pi-section filters?
5. b) Design K-type band pass filter having a design impedance of 500 ohms and cut-off frequencies 1 K Hz and 10 K Hz.
UNIT - III [1 x 12 = 12M]
6. a) Design a T-type and pi-type attenuators?
6. b) Design a constant resistance lattice attenuation equalizer to produce an attenuation of 20 dB at 50 Hz and 3 dB at 3000 Hz. Calculate its loss at 500 Hz. The equalizer is working between two impedances of 500 ohms each. (OR)
7. a) Design a
i) Full series equalizer
ii) Lattice equalizer.
b) Design a T-type attenuator to give an attenuation of 60 dB and to work in a line of 500 ohms impedance.
UNIT - IV [1 x 12 = 12M]
8. Write short notes on
i) Driving point function synthesis
ii) positive real function properties? (OR)
9. a) Check the positive realness of the function F(S)=(S^{2}+6S+5)/(S^{2}+9S+14)
9. b) Explain about Two-port network synthesis?