II/IV B.Tech Degree Examinations, June 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. Answer the following [12 x 1 = 12M]
a) What is drilling point impedance?
b) When the system is said to be stable?
c) What is open circuit impedance?
d) What is requirement for a two-port network to be reciprocal?
e) What are advantages of m-derived filter?
f) What is equalizer? Why it is required?
g) Which parameters are widely used in transmission line theory?
h) Design band pass filter using a high pass filter?
i) What are the requirements of a ideal filter?
j) What is propagation constant?
k) What is a natural response of a circuit?
l) What do you mean by network synthesis?
UNIT - I [1 x 12 = 12M]
2. a) Describe about poles and zeros of network functions. And explain about their restrictions for transfer functions?
2. b) How to find the Z-parameters for a circuit? (OR)
3. a) For the given network function, draw the pole zero diagram and hence obtain the time domain response i(t)?
I(S)=5S/((S+1)(S^{2}+4S+8))
3. b) Explain about hybrid parameters and image parameters?
UNIT - II [1 x 12 = 12M]
4. a) For the low pass filter shown in the figure below find the m-derived section to have a resonant frequencies of 1700 Hz and 3300 Hz for T and pi networks respectively.
4. b) Derive element values of a constant K band pass filter? (OR)
5. a) Explain about
i) Characteristic impedance in the pass and stop band
ii) Constant K-low pass filter.
5. b) Design a m-derived high pass filter with a cut-off frequency of 10 K Hz, design impedance of 5 ohms and m=0.4.
UNIT - III [1 x 12 = 12M]
6. a) Design a
i) Bridged T attenuator
ii) Lattice attenuator
6. b) Design the full shunt equalizer, for design resistance R_{0}=600 ohms and attenuation at frequencies of 600 Hz and 1200 Hz. (OR)
7. a) Design a
i) Constant resistance equalizer
ii) Full series equalizer.
7. b) Design a pi-type attenuator to give 20 dB attenuation and to have a characteristic impedance of 100 ohms.
UNIT - IV [1 x 12 = 12M]
8. a) Explain about
i) Two port network synthesis
ii) Testing driving point functions
8. b) Synthesize the function Z(S)=(2(S^{2}+1)(S^{2}+9))/((S)(S^{2}+4)) in foster form. (OR)
9. Explain about
i) Properties of L-C impedance function.
ii) Positive real functions.