Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech ECE (Electronics And Communications Engineering) 2020 March 3rd Sem BTEC 304 18 Network Theory Previous Question Paper
Roll No. Total No. of Pages : 03
Total No. of Questions : 09
B.Tech.(ECE) (2018 Batch) (Sem.?3)
NETWORK THEORY
Subject Code : BTEC-304-18
M.Code : 76447
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a) Define maximum power transfer theorem and state the conditions for maximum
power transfer for dc and ac circuits.
b) State convolution theorem.
c) Define Transmission Parameters.
d) A series RL circuit has R=10K ?, L=10mH and C=1 ? F. Find the Transfer function
of the circuit.
e) Define the necessary and sufficient conditions for a polynomial to be Hurwitz.
f) Define: transfer function, pole, zero.
g) Define : image impedance and Quality Factor.
h) Give the properties of LC circuit.
i) State the advantages of 3-phase supply over single phase.
j) Find the Laplace Transform of
i) e
?5t
cos 2t
ii) te
?2t
FirstRanker.com - FirstRanker's Choice
1 | M-76447 (S2)- 752
Roll No. Total No. of Pages : 03
Total No. of Questions : 09
B.Tech.(ECE) (2018 Batch) (Sem.?3)
NETWORK THEORY
Subject Code : BTEC-304-18
M.Code : 76447
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a) Define maximum power transfer theorem and state the conditions for maximum
power transfer for dc and ac circuits.
b) State convolution theorem.
c) Define Transmission Parameters.
d) A series RL circuit has R=10K ?, L=10mH and C=1 ? F. Find the Transfer function
of the circuit.
e) Define the necessary and sufficient conditions for a polynomial to be Hurwitz.
f) Define: transfer function, pole, zero.
g) Define : image impedance and Quality Factor.
h) Give the properties of LC circuit.
i) State the advantages of 3-phase supply over single phase.
j) Find the Laplace Transform of
i) e
?5t
cos 2t
ii) te
?2t
2 | M-76447 (S2)- 752
SECTION-B
2. For the given two port network calculate the Impedance parameters.
FIG.1
3. Find whether the given function is a positive real function?
2
50 14
( )
12
s s
F s
s
? ?
?
?
4. Determine the exponential form of Fourier series expansion for periodic wave shown in
Fig.2.
FIG.2
5. In the circuit shown, steady state is reached with switch open. Switch is closed at t=0.
Determine i(t) and v(t) for t>0. Fig. 3
FIG.3
6. What are different types of filter? Explain Butterworth Filter.
V
1
I
1
1 ? 2 ?
I
2
V
2 2 ? 4 ?
f t ( )
?T(?T+ ) a a 0 T(T+ ) a 2T(2T+ ) a
t
10 ?
1
2
W
1F
10A
S
(t=0)
1
2
FirstRanker.com - FirstRanker's Choice
1 | M-76447 (S2)- 752
Roll No. Total No. of Pages : 03
Total No. of Questions : 09
B.Tech.(ECE) (2018 Batch) (Sem.?3)
NETWORK THEORY
Subject Code : BTEC-304-18
M.Code : 76447
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a) Define maximum power transfer theorem and state the conditions for maximum
power transfer for dc and ac circuits.
b) State convolution theorem.
c) Define Transmission Parameters.
d) A series RL circuit has R=10K ?, L=10mH and C=1 ? F. Find the Transfer function
of the circuit.
e) Define the necessary and sufficient conditions for a polynomial to be Hurwitz.
f) Define: transfer function, pole, zero.
g) Define : image impedance and Quality Factor.
h) Give the properties of LC circuit.
i) State the advantages of 3-phase supply over single phase.
j) Find the Laplace Transform of
i) e
?5t
cos 2t
ii) te
?2t
2 | M-76447 (S2)- 752
SECTION-B
2. For the given two port network calculate the Impedance parameters.
FIG.1
3. Find whether the given function is a positive real function?
2
50 14
( )
12
s s
F s
s
? ?
?
?
4. Determine the exponential form of Fourier series expansion for periodic wave shown in
Fig.2.
FIG.2
5. In the circuit shown, steady state is reached with switch open. Switch is closed at t=0.
Determine i(t) and v(t) for t>0. Fig. 3
FIG.3
6. What are different types of filter? Explain Butterworth Filter.
V
1
I
1
1 ? 2 ?
I
2
V
2 2 ? 4 ?
f t ( )
?T(?T+ ) a a 0 T(T+ ) a 2T(2T+ ) a
t
10 ?
1
2
W
1F
10A
S
(t=0)
1
2
3 | M-76447 (S2)- 752
SECTION-C
7. The driving point impedance is given by :
( 1) ( 4)
( )
( )( 2)
s s
z s
s s
? ? ?
?
?
Obtain the Foster-I and Foster-II forms.
8. An unbalanced three-wire, star connected load has a voltage of 400V, the loads are :
(4+j8),(3+j4) and (15+j20) ?. Determine line currents and voltage across each phase
impedance.
9. Find current I in the 5 ? resistor using Thevenin theorem and verify the result using
Norton theorem Fig. 4.
FIG.4
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.
~
V=20 OV ?
+
5 ?
x
5 ?
y
10 ?
j4 ?
I=5 OA ?
FirstRanker.com - FirstRanker's Choice
This post was last modified on 21 March 2020