Download PTU B-Tech EEE 2020 Dec 3rd Sem 76381 Electrical Circuit Analysis Question Paper

Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (EEE)- Electrical And Electronics Engineering 2020 December 3rd Sem 76381 Electrical Circuit Analysis Previous Question Paper

Roll No.
Total No. of Pages : 03
Total No. of Questions : 18
B.Tech. (EE) (2018 Batch) (Sem.?3)
ELECTRICAL CIRCUIT ANALYSIS
Subject Code : BTEE-301-18
M.Code : 76381
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
Q1 What are duality Networks?
Q2 Express Z-parameters in terms of Y-parameters.
Q3 State and derive maximum power transfer theorem.
Q4 Two parallel branches Z1 and Z2 take the current I1 and I2 as follows :
I1=3.1568?A; I2=12?45?A, find the complex power drawn from 17V supply.
Q5 Explain the importance of pole and zeroes in a transfer function.
Q6 Define : series and parallel resonances.
Q7 Find total inductance of three inductances in additive series combination with L1=2H,
L2=3H and L3=5H, the mutual inductances are M12=1H, M13=2H and M23=0.5H.
Q8 A series circuit has 4, 5, 9 and 10 resistors. Which resistor has the most voltage
across it? Justify your answer.
Q9 Give the propagation constant of a symmetrical T-section and -section.
Q10 Define transfer and driving point impedance of a 2-port network.
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SECTION-B
Q11 Determine frequency response in terms of resonant peak magnitude and corresponding
1
frequency of a system having following closed loop transfer function : C s
.
2
s s 1
Q12 Find the frequency at which a prototype T-section low-pass filter having cut-off frequency
fc have an attenuation of 15dB.
Q13 Determine the current in the 5 resistor for the circuit shown using mesh analysis of Fig. 1.
2A
3
5
2
3
1
+
2V
12 V
1A
1A
FIG.1
Q14 In the circuit shown, S is moved from 1 to 2 at t = 0. Determine i(t) and v(t) for t > 0
through resistor if i(0) = 2A of Fig. 2.
1
2
t = 0
500
i(+)
10A
V(+)
10 H
FIG.2
Q15 State the necessary and sufficient conditions for a polynomial to be Hurwitz and Check
whether P(s) = s4 + s3 + 2s2 + 4s + 1 is Hurwitz or not.
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SECTION-C
Q16 The driving point impedance is given by :
s
1 s 4
z s
ss 2s 5
Obtain the Foster-I and Cauer-II forms.
Q17 Define all types of filters and draw their characteristics and block diagrams.
Q18 Find current IL in the 5 resistor using Thevenin theorem and verify the result using
Norton theorem of Fig. 3.
6
IL
A
2
2
3
+
5 30V
5
j2
j3
B
FIG.3
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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