Hall Ticket No Question Paper Code: AEE005
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
Four Year B.Tech III Semester End Examinations (Regular) November, 2018
Regulation: IARE R16
NETWORK ANALYSIS
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. Deduce the relationship between phase and line quantities of voltage and currents in a 3-wire
star connected system.
A three phase balanced delta connected load of Ω is connected across a 400V, balanced
supply. Determine the phase current and line current. Assume RYB phase sequence. Calculate
the power drawn by the load.
2. Sketch the circuit waveforms and the phasor diagram for a Y-connected generator with phase
sequence RYB. Repeat for a generator with sequence BYR. Explain why the phase sequence is
necessary.
The power readings of two wattmeters are +15kW and -4kW for a three phase load. If the supply
voltage is balanced 440V. Find the true power drawn by the load, the power factor and line
current.
UNIT II
3. Briefly, discuss the transient response in RL circuit with DC excitation.
In a RC series circuit R 1
and C 0.5F. A DC voltage V=10v is suddenly applied at t=0.
Obtain i Assume no initial charge in the capacitor.
4. A time dependent voltage is applied to a series connection of RLC network. Find s-domain
impedance and current. Assume initial condition of the voltage in inductor to be assisting the
input current and that in capacitor opposing the input current. Draw the t-domain and s-domain
circuits.
In a series circuit, R 5Ω, L 1H and C 1F. A DC voltage of 20V is applied at t=0.
Obtain
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UNIT III
5. Define network function. Classify the different types of network functions and explain.
Compute the driving point impedance of the circuit shown in Figure 1
Figure 1
6. State and explain the significance of poles and zeros in network function.
For the given network function, draw the pole zero plot. And also compute the time domain
response of 24 8).
UNIT IV
7. Compute the open circuit parameters of two port network shown in Figure 2.
Figure 2
In the bridge circuit of Figure 3 I1 10 A and I2 A. Find V1 and V2 using Y parameters.

Figure 3
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8. Discuss the condition of reciprocity and symmetry in h-parameter representation.
In a two port network, Z11=2
Z21=Z12=5
Z22= 1
Find:
Y-parameters
h-parameters
ABCD parameters
UNIT V
9. A filter section is required to have a nominal impedance of 600
a cut-off frequency of 5 kHz and
a frequency of infinite attenuation at 5.50 kHz. Design An appropriate 'm-derived' T section
An appropriate 'm-derived' section.
A high-pass T section filter has a cut-off frequency of 500 Hz and a nominal impedance of 600

. Determine the frequency at which the characteristic impedance of the section is Zero
300
590

10. A filter section is to have a characteristic impedance at zero frequency of 600
and a cut-off
frequency at 5 MHz. Design low-pass T section filter A low-pass section filter to meet
these requirements.
Determine for each of the filter sections shown in Figure The cut-off frequency
The nominal impedance.
Figure 4
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