PTU B.Tech ECE 3rd Semester May 2019 57004 NETWORK ANALYSIS AND SYNTHESIS Question Papers

PTU Punjab Technical University B-Tech May 2019 Question Papers 3rd Semester May Electronic and Communication Engineering (ECE)

Roll No.
Total No. of Pages : 03
Total No. of Questions : 09
B.Tech.(EIE) (2011 & Onwards) (Sem.?3)
NETWORK ANALYSIS AND SYNTHESIS
Subject Code : EE-201
M.Code : 57004
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.

SECTION-A
1.
Answer briefly :

a. What do you mean by periodic voltage? Explain.

b. What is loop current? Discuss.


c. State Superposition theorem.


d. What is steady state response? Discuss.


e. Why network analysis is required? Explain.


f. What do you mean by Admittance function? Explain.


g. What do you mean by pass band and stop band? Explain.

h. Discuss the significance of poles and zeros.


i. List the limitations of constant-K filters.

j. Explain briefly the purpose and the scope of network synthesis.


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SECTION-B
2.
Find R to have the maximum power transfer in the circuit. Also obtain the amount of
maximum power.
R
+ ?
x
5
6V
2A
10
2
R
10V
y
+
?

Fig.1
3.
The T section constant ?K low pass filter has series inductance of 80 mH and shunt
capacitance of 0.022F. Determine the cut-off frequency and nominal design impedance.
Also design an equivalent -section.

4.
Find the expression for the voltage transfer ratio for the network shown below :
C1
C2
V
R1
R2
i
Vo

Fig.2
5.
Find the current i(t) in a series RC circuit having R = 1 ohm, and C = 0.5F when an
exponential voltage v =10 e?1 is suddenly applied at t = 0.

6.
If u(t) is a unit step function, Find the Laplace transform of the following functions.

a) sin (t-t0) u(t)

b) sin (t) u((t-t0)



SECTION-C
7.
Explain the following :

a) Design of m derived filters

b) Convolution theorem
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8.
Find the power loss in l ohm resistor using Thevenin's and verify the result Norton's
theorem
x
5
2
+
? 10V
5A
2
1
(RL)
y

Fig.3
9.
For the given function :
(s 1) (s 3) (s 5)
Z (s)

s(s 2) (s 4) (s 6)

Determine the Cauer, first and second forms of realisation.











NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.

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