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Electrical Network Analysis and Synthesis Question Paper - Dec 17 - Electronics Engineering (Semester 3) - Mumbai University (MU)
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Electrical Network Analysis and Synthesis - Dec 17
Electronics Engineering (Semester 3)
Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.
Attempt any Four
1.a.
Obtain Transmission parameters in terms of 'Z' parameters
(5 marks)
00
1.b.
If i1 = 2A, Find V.
(5 marks) 00
1.c.
Obtain s-domain (Laplace transform) equivalent circuit diagram of an inductor and capacitor with initial conditions.
(5 marks)
00
1.d.
Check whether the polynomial is Hurwitz or not by continued fraction method.
F(S) = $s^4 + S^3 + 4s^2 +2s +3$
(5 marks)
00
1.e.
List types of damping in a series R-L-C circuit and mention the condition for each damping.
(5 marks)
00
2.a.
Obtain hybrid parameter of the interconnected 2- port network.
(8 marks)
00
2.b.
Find current through 15 $\Omega $ resistor.
(6 marks)
00
2.c.
Test whether
(6 marks)
00
$F(S)=\frac{2 S^{4}+7 S^{3}+11 S^{2}+12 S+4}{S^{4}+5 S^{3}+9 S^{2}+11 S+6}$ is a positive real function.
3.a.
Obtain Thevenin's equivalent circuit.
(10 marks)
00
Hence find current Flowing through 10 $\Omega$ load.
3.b.
For the network shown in the figure, find the voltage across the capacitor.
(5 marks)
00
4.a.
Find Ic and Vc for $t \gt 0$
(10 marks)
00
4.b.
Realise the following function in Foster-I and Foster-II form.
(10 marks)
00
$Z(s) = \frac{(s+1)(s+3)}{(s+2)(s+4)}$
5.a.
Find driving point impedance $\frac{V_1}{I_1}$ for the network shown in figure.
(10 marks)
00
5.b.
Find $i_{1} (t)$, $i_{2}(t)$ and $i_{3}(t)$ at $t=0^+$
(10 marks)
00
6.a.
Find the characteristic impedance, cut off frequency and pass band for the network shown:
(6 marks)
00
6.b.
For given circuit, the switch is closed at t= 0. Find $V_{C} (t)$ for t>0
(6 marks) 00
6.c.
The network shown in figure below reaches a steady state with switch position 1. At t= 0, the switch is changed from the positon 1 to the position 2, Find the value of i, $\frac{di}{dt}$, $\frac{d^2i}{dt^2}$ at $t= 0^+$
(8 marks)
00
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