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16 a)

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b)

B3804 Pages:

Find the expression for the current through the inductor 11(1) in a parallel RLC
(three branch) circuit when a step input of I amperes is applied across it at time
t=0. Assume all initial conditions are zero. Apply Laplace transform technique.
The switch S in the circuit of Fig. 7 is in the closed position for long time. At
1-0, the switch opens. Find the expression for the current using Laplace

transform.

i(t)

2೧

Figure 7

PART D
Answer any twofull questions, each carries 10 marks
Obtain the z parameters for the network in Fig. 8 as functions of s.

1Q 1H

Figure 8

The Z- parameters of a two port network are 2115 10೧, ൧൧൦150, 21222152.

Find the equivalent T-network and ABCD parameters

Test whether the polynomial P(s)=s*+s*+3s"+2s+12 is Hurwitz

Point out the difference in the philosophy between Foster and Cauer form of

synthesis of a given driving point impedance

The driving point impedance of a circuit is

Z(s) = 243 261-0433) +3)
(൦ +2)

Realize the given impedance function Z(s)as a Cauer’s first form.

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