B C192008 Pages:4

PART ^
Answer any two full questions, each carries 10 marks.
12 In the circuit shown in figure, steady state is reached, while the switch is in (10)

position 1. At t=0, the switch is moved to position 2. Determine the energy stored

in the capacitor at t= 0.1 ms.

13 In the circuit shown in figure.(11) the switch S is in position 1 and the circuit (10)
attained its steady state .The switch 5 is transferred to position 2 at time 150
.Determine the current through the inductor i(t) for 2-0. Use s- domain approach

2.5H 100
10V

14 a) For the circuit shown in figure, the switch was open for along time. Att=0,the (5)
switch is closed. Determine the current through the inductor for t > 0. Take E =

10 V, Ry = 162, Ro = 262, 1, = 1H.

b) Obtain the dotted equivalent circuit of the network shown in figure and then (5)
determine the net inductive reactance.

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