Download AKTU B-Tech 3rd Sem 2017-2018 REE305 Network Analysis And Synthesis Question Paper

Firstranker's choice

Printed Pages: 02

Paper ID: 2005

--- Content provided by​ FirstRanker.com ---

Roll No.

B. Tech. (SEM. III) THEORY EXAMINATION 2017-18

NETWORK ANALYSIS AND SYNTHESIS

Time: 3 Hours

Total Marks: 70

--- Content provided by⁠ FirstRanker.com ---

Note: 1. Attempt all Sections. Assume missing data if any.

SECTION A

1. Attempt all questions in brief. 2 x7 = 14

1. Write two properties of Complete Incidence matrix.
2. Write Hybrid parameters in terms of Z parameters.

--- Content provided by‍ FirstRanker.com ---

3. State two properties of the R-L driving point Impedance function.
4. Describe the following: Tree, Co-Tree, Twig, Link, Cut-set and Tie set.
5. State and describe the properties of RL and RC DPI Network.
6. State and describe thevenin theorem with suitable example.
7. Describe complex frequency in brief.

--- Content provided by⁠ FirstRanker.com ---

8. Write the Z parameters for the given network.

[Diagram description: A circuit with impedances ZB and ZC, voltage source V, and current Wip.]

SECTION B

Attempt any three of the following: 7 x 3 = 21

2. For the given reduced incidence matrix. Draw the graph and hence obtain the f-cutset matrix.

   [Matrix: 0 0 1 1 1 0 -1, 0 1 0 0 -1 1 1, -1 0 1 0 0 -1 0]

   --- Content provided by‍ FirstRanker.com ---

3. For the network shown in Fig below draw the directed graph. And also find number possible tree.

[Diagram description: A circuit with components C1, R1, R3, C2 and voltage source W]

www.FirstRanker.com
4. Find current through 5O resistor using Thevenin's theorem.

   [Diagram description: A circuit with 10O resistor, 50V voltage source, 2O resistor, 100V voltage source, 5O resistor, 2O resistor, and 3O resistor.]

--- Content provided by​ FirstRanker.com ---

5. Test whether the polynomial P(s) is Hurwitz or not.
   1. s⁵ + 3s² + 2s
   2. s⁴ + 5s³ + 5s² + 4s + 10.
6. Find Y and Z parameters of the network.

   [Diagram description: A circuit with 1 kO resistor, 1O resistor, and 2V voltage source.]

--- Content provided by‍ FirstRanker.com ---

www.FirstRanker.com

SECTION C

Attempt any one part of the following: 7x1=7

3. (a) State the properties of RL driving point impedance function. Also realize the given network impedance function using Foster form I

   Z(s)= (s+1)(s+3) / (s+2)(s+4)

4. (b) Explain the advantage of active filter in comparison to passive filter in detail.

--- Content provided by⁠ FirstRanker.com ---

Attempt any one part of the following: 7x1=7

4. (a) For the given network function, draw the pole zero diagram and hence obtain the time response I(t)

   I(s) = 5s / (s+1)(s²+4s+8)

5. (b) Design constant K low pass T and p section filters to be terminated in 600 O having cut-off frequency 3 kHz.

Attempt any one part of the following: 7x1=7

--- Content provided by FirstRanker.com ---

5. (a) Determine the currents in all the branches of the network shown in fig. using node analysis method of the graph theory.

   [Diagram description: A circuit with resistors 1O, 2O, 2O, 1O, 2O.]

Firstranker's Espain following tework topol

1. Tree
2. Co-tree

--- Content provided by⁠ FirstRanker.com ---

3. Incidence matrix
4. Oriented graph
5. Twig and link

Attempt any one part of the following: 7x1=7

6. (a) Sketch the following signals:-
   1. t²[U(t-1)-U(t-3)]

   --- Content provided by​ FirstRanker.com ---

   2. (t-4)[U(t-1)-U(t-4)]
7. (b) In the circuit shown v(t) =2u(t) and iL(0-) = 2 amps. Find and sketch i2(t).

   [Diagram description: A circuit with v(t), 1O resistor, inductor 5h, 1O resistor, i2(t)]

Attempt any one part of the following: 7x1=7

--- Content provided by‌ FirstRanker.com ---

7. (a) State and prove the maximum power transfer theorem applied to the AC circuits.
8. (b) Determine the current in capacitor C by the principle of superposition of the network shown below.

   [Diagram description: A circuit with +4V voltage source, 1O resistor, 3O resistor, -j4 O, 3O resistor, and j2A current source.]