B C1108 Pages 4

5s
(s) 1/2s 000000
Fig. 2
6 Derive the expression of z- parameters in terms of y- parameters. (5)
7 Explain the differences between Cauer form and Foster form. (5)
8 Check whether the polynomial s* +6s* +2s? +5 +1 is Hurwitz or not. (5)
PART 13

Answer any two full questions, each carries10 marks.

9 Use superposition theorem to find the current, I in the circuit shown in fig. 3 (10)

1020 A ⋅⋅
50290 V

10 For the network shown in figure 4, draw the network graph. Select 2, 4, 5 as tree (10)

branches. Obtain tie-set matrix and hence find the loop currents.

Fig. 4

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