STUPIDSID
1 (a)
For maximum power transfer find the value of ZL if
(i) ZL is impedance
(ii) ZL is pure resistance :
(i) ZL is impedance
(ii) ZL is pure resistance :
5 M
1 (b)
find initial value of, f(t)= 20-10t-e-25t
verify using initial value theorem.
verify using initial value theorem.
5 M
1 (c)
In the network given below, initial value of IL =4A and VC=100. Find IC(0+):
5 M
1 (d)
Current I1 and I2 entering at 1 and port 2 respectively of two port network are given by following equation.
I1 =0.5V1 - 0.2V2
I2 = -0.2V1 +V2
Obtain T and Π(pi) representation.
I1 =0.5V1 - 0.2V2
I2 = -0.2V1 +V2
Obtain T and Π(pi) representation.
5 M
Attempt any FOUR from the following
1 (e)
For network shown, find VC /V and draw pole-zero plot.
5 M
2 (a)
Using mesh analysis find power supplied by the dependent source.
10 M
2 (b)
Find current supplied by source.
10 M
3 (a)
Write B and Q matrix for the Graph shown.
10 M
3 (b)
Draw Bode plot for the function G(s). Find gain margin, phase margin and comment on stability.
\[ G(s)= \frac{2(s+0.25)}{s^2(s+1)(s+0.5)} \]
\[ G(s)= \frac{2(s+0.25)}{s^2(s+1)(s+0.5)} \]
10 M
4 (a)
Switch is opened at t=0 with initial conditions as shown. Find
\[ v_1, \frac{dv_1}{dt}, \frac{dv_2}{dt}\ at \ time\ 0^+ \]
\[ v_1, \frac{dv_1}{dt}, \frac{dv_2}{dt}\ at \ time\ 0^+ \]
10 M
4 (b)
Find Y parameter using interconnection:
10 M
5 (a)
In the network key is closed at t=0. Find i1 (0+), i2(0+ and i3 (0+).
10 M
5 (b)
Find i(t).
10 M
6 (a)
The circuit attain steady state with switch at position (a) & is moved to position (b) at t=0. Find V(t) for t ≥ 0.
10 M
6 (b)
Find Z11, Z21 and G21
10 M
7 (a)
Realize following functon in Foster II form
\[ Z(s)=\frac{(s^2+1)(s^2+3)}{s(s^2+2)(s^2+4)} \]
\[ Z(s)=\frac{(s^2+1)(s^2+3)}{s(s^2+2)(s^2+4)} \]
10 M
7 (b)
Check following polynomials for Hurtwitz -
\[ \ \left(i\right)\ \ p\left(s\right)=S^4+4s^2+8 \]
\[ \left(ii\right)\ \ p\left(s\right)=s^4+s^3+5s^2+3s+4 \]
\[ \ \left(i\right)\ \ p\left(s\right)=S^4+4s^2+8 \]
\[ \left(ii\right)\ \ p\left(s\right)=s^4+s^3+5s^2+3s+4 \]
10 M
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