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Old May 26th, 2014, 07:27 PM
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Default Re: Anna University ECE Fifth Semester Exam Papers

As per your request here I am sharing the Anna University ECE Fifth Semester Exam Previous Years Question Paper:

Anna University ECE Fifth Semester Exam Previous Years Question Paper

Answer All Questions
PART A-[10 x 2 = 20]
1.What is propagation constant ? Which are its two components?
2.State the condition for distortionless line.
3.If the reflection co-efficient of a line is 0.3 ?_?-66?^° ¦ ,calculate the standing wave ratio.
4.What is the value of Z_° for the dissipationless line?
5.What are the characteristics of TEM wave?
6.Write Maxwell’s equations in point form.
7.A rectangular waveguide with dimensions a=8.5cm and b=4.3cm .Determine the cut-off frequency for ?TM?_10 mode of propagation.
8.What is meant by dominant mode of the wave?
9.What is meant by cavity resonator?
10.What is the dominant mode in circular waveguide ? Why ?

PART B-[5 x 16 = 80]
(a)(i) Derive the expression for voltage and current at any point on a transmission line in terms of receiving end voltage and current.[Marks 10]
11.(a)(ii) A line has the following primary constants
R=100 ?/km L=0.001 H/km
G=1.5 µv/km C=0.062 µF/km.
Find the characteristic impedance and the propagation constant .[Marks 6]
11(b)(i) Derive Campbell’s equation.[Marks 8]
11.(b)(ii) A generator of 1V,1kHz supplies power to a 100km transmission line terminated in 200 ? resistance. The line parameters are R=10?/km, L=3.8 mH/km, G=1µv/km, C=0.0085 µF/km Calculate the input impedance and reflection coefficient.[Marks 8]
12(a)(i)Define standing wave ratio and obtain the expression of VSWR in terms of reflection coefficient.[Marks 8]
12.(a)(ii) Derive the input impedance of a quarter wave line and discuss its applications.[Marks 8]
12.(b)(i) Obtain the length and the location of a short circuited stub for impedance
matching on a transmission line.[Marks 10]
12.(b)(ii) A load (50-j100)? is connected to a 50? line. Design a short circuited stub to provide matching between the two at signal frequency of 30Mhz using Smith Chart.[Marks 6]
13.(a)(i) Obtain the solution of field components of a TE wave between parallel plate , propagating in Z direction.[Marks 10]
13.(a)(ii)A pair of perfectly conducting planes are separated by 3.6cm in air. For ?TM?_10 mode determine the cut-off frequency and cut-off wavelength, if the operating frequency is 5Ghz.[Marks 6]
13.(b)(i) Derive the expressions for the field components of TEM waves between parallel conducting planes. Discuss the properties of TEM waves.[Marks 10]
13.(b)(ii)For a frequency of 10 GHz and plane separation of 5cm in air, find the cut-off wavelength, phase velocity and group velocity of the wave.[Marks 6]
14(a) Deduce the expressions for the field components of TM waves guided along rectangular waveguide. [Marks 16]
14.Derive the expression of wave impedance for TE and TM waves guided along rectangular waveguide.[Marks 8]
14.(b)(ii) A ?TE?_10 mode is propagated through a waveguide with a=10cm at a frequency of 2.5Ghz.Find the cut-off wavelength, phase velocity, group velocity and wave impedance.[Marks 8]
15.(a)(i) Derive the expressions for the field components of TE waves guided along circular waveguide.[Marks 10]
15.(a)(ii) A circular waveguide has an internal diameter of 6cm.For a 9GHz signal propagated in the ?TE?_11mode,calculate the cut-off frequency and the characteristic impedance [?(ha)?_11^1=1.84].[Marks 6]
15.(b)(i)Obtain the expression for the resonant frequency of a rectangular cavity resonator.[Marks 8]
15.(b)(ii) Calculate the lowest resonant frequency of a rectangular cavity resonator of dimension a=2cm, b=1cm and d=3cm.[Marks 8]

Anna University
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+91 44 2235 7080

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Old October 8th, 2015, 12:04 PM
Default Re: Anna University ECE Fifth Semester Exam Papers

Hello sir I required the exam papers of ECE fifth semester of Anna University so please provide me the same.
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Old October 8th, 2015, 12:06 PM
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Join Date: Jun 2013
Default Re: Anna University ECE Fifth Semester Exam Papers

Anna University is founded in the year 1978. The University offers courses in Engineering, Technology and other branches of science.

Anna University provides a course in Electronics and Communication Engineering (B.E.).

The list of subjects of the fifth semester of the course is given below:

• Antenna and Wave Propagation

• Information Theory and Coding

• Micro-Electronics

• Computer Hardware Design

• Linear IC Applications

• Microprocessors & Interfacing

• Microprocessors (Pr)

• Linear Integrated Circuits (Pr)

Paper pattern

Maximum marks-100

Total no. question-8 (2 from each unit)

No. of questions to be attempted-5 (at least one from each unit)

Duration of the exam-3 hours

Now as per your demand here I am giving you the question papers of previous years.

ECE Fifth Semester Exam Papers

PART A-(2*20=40)
1. What is the use of mason’s gain formula.
2. Give two examples for open loop and closed loop systems.
3. What do you meant by analogous systems.
4. What are the frequency domain specifications.
5. What are the advantages and disadvantages of feedback control systems.
6. How can we classify second order system based on damping ratio.
7. Define gain margin.
8. Define resonant frequency.
9. State Routh stability criterion.
10. Define Nyquist stability criterion.
11. What are the difference between state space analysis and Transfer function analysis.
12. What are root loci.
13. What is servomechanism.
14. What are the different types of controller.
15. What is synchro.
16. Name the test signals used in control systems.
17. What is polar plot.
18. Give examples for frequency response plot.
19. Write down state mode and output model of state space systems.
20. What do you mean by decomposition of transfer function.

PART B-(5*12=60)

21. A) A unity feedback system has an open loop transfer function G(s)=k/s(s+10). If the damping ratio is 0.5 determine (i) the value of k, (ii) peak overshoot, (iii) time to peak overshoot, (iv) settling time. (8) B) For a unity feedback whose G(s)=1/s(s+1) the input signal is r(t)= 4+6t+2t3. Find the generalized error coefficients. (4)
22. For the given block diagram find corresponding signal flow graph and evaluate closed loop transfer function relating to output and input.
23. Determine the value of k for a unity feedback control system have open loop transfer function G(s)H(s)=k/s(s+2)(s+4) such that (i)gain margin =20db (ii) phase margin =600.
24. Investigate the F(s) for stability using RH criterion (i) F(s) =s4+ks2+(k+1)s+2 (ii) F(s)=s4+s3+3s2+s+6 (iii) F(s)=s5+s4+2s3+2s2+6s+6
25. Obtain the state space model of the system with transfer function C(s)=s2+3s+2
in phase Variable form. R(s) s2+7s+12
26. A system characterized by the following state equation

Find (i) Transfer function of the system (ii) State transition matrix.
27. Sketch the root locus for the system with characteristic equation 1+G(s)H(s)=K(s+2)(s+3)
28. Find transfer function of field controlled DC servo motor.

PART A-(2*20=40)
1. Name the two fundamental approaches of building a network core.
2. Why HTTP is to be stateless protocol.
3. What is a proxy server.
4. What are the two main protocols of the internet.
5. What is the use of the transport layer protocol.
6. What are positive and negative acknowledgements.
7. Name the three phases in a virtual circuit.
8. What is TTL (Time to Live).
9. Distinguish between forwarding and routing.
10. What is broadcasting routing.
11. What is the size of a MAC address.
12. State the purpose of layering in networks.
13. What is cyclic redundancy check (CRC) code.
14. What are the contents of ARP table.
15. What is round trip time(RTT).
16. What is polyalphabetic encryption.
17. What is authentication.
18. What are deltagram networks.
19. What is security parameter index (SPI).
20. What is network management.

PART B-(5*12=60)

1. What are the different types of delay in packet switched networks. Explain them.
2. Briefly explain the principles of network applications.
3. Explain multiplexing and de-multiplexing.
4. Explain the TCP congestion control mechanism.
5. Explain the link state routing algorithm in detail.
6. Explain data encryption standard in cryptography with the necessary diagram
7. Explain virtual circuit network in detail with diagram.
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