1 (a)
Find the thevnin's equivalent network for terminals A and B.

4 M

1 (b)
For the network shown, the switch is closed at t=0. Find the current i

_{1}(t) t>0.

4 M

1 (c)
State the condition for reciprocity of h-parameter and prove it.

4 M

1 (d)
Obtain S-domain equivalent circuit of an inductor and capacitor having non-zero initial conditions.

4 M

1 (e)
What are scattering parameters. State their properties.

4 M

2 (a)
In the given network, what will be the R

_{L}to get maximum power delivered to it. Calculate power.

8 M

2 (b)
For the network shown, determine the current i(t) when the switch is closed at t=0 with zero initial condition.

8 M

2 (c)
List the types of damping in series R-L-C circuit and mention the condition for each damping.

4 M

3 (a)
Design a single stub match for a load of (150 + j232.5)Ω for 75Ω transmission line at 500 Mhz using smith chart.

8 M

3 (b)
Define T-parameters and relate them to other parameter as indicated

i) A and C in terms of z-parameters

ii) B in terms of y-parameter

i) A and C in terms of z-parameters

ii) B in terms of y-parameter

6 M

3 (c)
Compare Foster form-I and Foster form-II of an L.C. network. \[ Z(s) = \dfrac {6s(s^2+4)} {(s^2 +1) (s^2+64)}. \]

6 M

4 (a)
Check the positive real functions \[ i) \ F(s) = \dfrac {s^2+ 6s+5}{s^2 +9s+14} \ and \\ ii) \ F(s)= \dfrac {s^3 + 6s^2 +7s +3}{s^2 + 2s+1} \]

8 M

4 (b)
Derive an expression for characteristics equation of a transmission line. Also obtain α, β and γ of the line.

8 M

4 (c)
What are standing waves. Define reflection coefficient and V.S.W.R. of a transmission line.

4 M

5 (a)
Test whether the following polynomials are Hurwitz, use continuous fraction expansion. \[ i) \ s^7 + 2s^6 + 2s^5 + s^4 + 4s^3 + 8s^2 + 8s +4 \\ ii) \ s^4 + 2s^2 + 2 \]

10 M

5 (b)
Find teh characteristics impedances, cut off frequency and passband frequency for given network.

5 M

5 (c)
Obtain pole-zero plot for I

_{2}/I_{1}.

5 M

6 (a)
Two identical sections of the network shown are connected in cascade manner. Obtain the transmission line parameters of over all connection

8 M

6 (b)
Find the current through 15-Ω resistor.

6 M

6 (c)
Compare Cauer form-I and Cauer form-II of RC Network. \[ Z(s) = \dfrac {3(s+2)(s+6)} {s(s+4)}. \]

6 M

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