Anna University Chennai B.E Electrical and Electronics Engineering B.E./B.Tech.DEGREE EXAMINATION,APRIL/MAY 2010,IC 1403 Neural Network And Fuzzy Logic Control 2010 Question paper

B.E./B.Tech.DEGREE EXAMINATION,APRIL/MAY 2010
Eight Semester
Electrical and Electronics Engineering
IC1403- Neural Network And Fuzzy Logic Control

(Common to Seventh Semester B.E.Instrumentation and Control Engineering and
Electronics and Instrumentation Engineering)

(Regulation 2004)


Time:Three Hours Maximum:100 marks

Answer ALL questions.

PART A-(10*2=20 MARKS)

1. What is Artificial Neuron?
2. Distinguish between supervised and unsupervised learning.
3. Comment on the suitability of Artificial neural Network for control application.
4. what is the use of feedback network?
5. Define the terms membership function and universe of discourse with respect to fuzzy sets.
6. What is a fuzzy relation?
7. State the three forms of fuzzy statement with suitable examples.
8. Given low pressure = {1/50+0.8/52+0.6/53+0.4/54+0.2/55+0/56} find the membership function for pressure not very low.
9. compare the fuzzy logic control and classical control system.
10. What is the need for ANN in Fuzzy Logic Controller design during fuzzification?

PART B-(5*16=80 MARKS)

11.(a)What is a Back Propogation Network? Derive the expression for weight updation in a multilayer feed forward neural network using standard back propogation learning.(16)

or
(b)(i)Perform three training steps of simple network with 3 inputs using the delta learning rule for ?=1,C=0.25.Train the network using the following data pair,
X1= [2 ],d1=-1, X2=[2 ],d2=1, X2=[-1],d3=1
[0 ] [-2] [1 ]
[-1] [-1] [-1]
[1 ] [0.5] [0.5]

Assume bipolar continuous activation function with initial weight vector W^1=[1,0,-0.5,1].(8)

(ii) Explain in detail the types of activation functions used in artificial neuron.(8)

12.(a)(i) Explain ANN configuration for forward plant identification and plant inverse identification.(10)
(ii) Write down the algorithmic steps for Discrete hopfield network(6)

or
(b)(i) Discuss the application of ANN for inverted pendulam control.(10)
(ii) Discuss any one of the neuro control schemes in detail.(6)

13.(a) Discuss in detail the methods of defuzzification used in fuzzy logic with examples.(16)

or
(b)(i) Fuzzy sets A,B,C are defined in the interval X=[0,10] of real numbers by the membership function µA(X)=X/X+2,µB(X)=2^-X,µC(X)=1/1+10(X-2)^2.
Determine
(1) A UNION B
(2) B UNION C
(3) B INTERSECTION C
(4) -
A(4)

(5)SCALAR CARDINALITY AND FUZZY CARDINALITY OF FUZZY SET A(2)
(6)a-CUT FOR THE FUZZY SET A FOR a=0.2,0.4(2)

(ii)Let the fuzzy set A={0.1/x1 + 0.9/x2 + 0/x3}, B= {0/Y1 + 1/Y2 + 0/Y3} find the relation R=AxB using a cartesian product,let C be another fuzzy set C={0.3/x1 + 1.0/x2 + 0.0/x3}.usimg max-min composition find S=C?R and using max-product composition find S=C?R .(8)

14.(a)With a neat block diagram, explain FLC system and discuss the steps involved in designing a FLC. (16)

Or

(b)(i)Explain the concept of adaptive fuzzy system with suitable example(8)
(ii)Explain the steps involved in designing simple Genetic Algorithm by explaining population of binary strings,control parameters,fitness function,genetic operators,selection mechanism and encoding.(8)

15.(a)(i) Explain Fuzzy logic controller (FLC) design for image processing.(8)
(ii) Design FLC for home heating system.(8)

or
(b)(i)Explain the scheme of maintaining blood pressure during anaesthesia using FLC.(8)
(ii)Explain the significance of neuro fuzzy technique with a case study.(8)

Anna University Chennai B.E Computer Science and Engineering B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010, CS2251 - DATABASE MANAGEMENT SYSTEMS Question paper

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010.
Fourth Semester
Computer Science and Engineering
CS2251 - DATABASE MANAGEMENT SYSTEMS
(Common to Information Technology)
(Regulation 2008)
Time: Three hours Maximum:100 marks
Answer ALL Questions.
PART A- (10 X 2= 20 marks)

1. Explain the basic structure of a relational database with an example.
2. What are the functions of a DBA?
3. Give the usage of the rename operation with an example.
4. What do you mean by weak entity set?
5. What is normalization?
6. Write a note on functional dependencies.
7. What do you mean by a transaction?
8. Define the term ACID properties.
9. Describe flash memory.
10. List out the physical storage media.

PART B- (5 X 16 = 80 Marks)

11. (a) (i) Discuss the various disadvantages in the file system and explain how it can be overcome by the database system. (6 Marks)
(ii) What are the different Data models present? Explain in detail. (10 Marks)
(Or)
(b) (i) Explain the Database system structure with a neat diagram. (10 Marks)
(ii) Construct an ER diagram for an employee payroll system. (6 Marks)

12. (a) (i) Explain the use trigger with your own example. (8 Marks)
(ii) Discuss the terms Distributed databases and client/ server databases. (8 Marks)
(Or)
(b) (i) What is a view? How can it be created? Explain with an example. (7 Marks)
(ii) Discuss in detail the operators SELECT, PROJECT, UNION with suitable examples. (9 Marks)

13. (a) Explain 1NF, 2NF and 3NF with an example. (16 Marks)
(Or)
(b) Explain the Boyce- Codd normal form with an example. Also state how it differs from that of 3NF. (16 Marks)

14. (a) (i) How can you implement atomicity in transactions? Explain. (8 Marks)
(ii) Describe the concept of serializability with suitable example. (8 Marks)
(Or)
(b) How concurrency is performed? Explain the protocol that is used to maintain the concurrency concept. (16 Marks)

15. (a) What is RAID? Explain it in detail. (16 Marks)
(Or)
(b) Mention the purpose of indexing. How this can be done by B+ tree? Explain. (16 Marks)

Anna University Chennai B.E Computer Science and Engineering B.E/B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010, CS2204 - ANALOG AND DIGITAL COMMUNICATION 2010 Question paper

B.E/B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010
Third Semester
Computer Science and Engineering
CS2204 - ANALOG AND DIGITAL COMMUNICATION
(Regulation 2008)
Time: Three hours
Maximum: 100 Marks
Answer ALL Questions

PART A- (10 x 2 = 20 Marks)

1. In a Amplitude modulation system, the carrier frequency is Fc= 100KHz. The maximum frequency of the signal is 5 KHz. Determine the lower and upper side bonds and the bond width of AM signal.
2. The maximum frequency deviation in an FM is 10 KHz and signal frequency is 10 KHz. Find out the bandwidth using Carson's rule and the modulation index.
3. Draw the ASK and FSK signals for the binary signal s(t)= 1011001.
4. What are the advantages of QPSK?
5. Define Nyquist sampling theorem.
6. For the signal m(t)= 3 cos 500^t + 4 sin 1000^t, Determine the Nyquist sampling rate.
7. What is meant by ASCII code?
8. Which error detection technique is simple and which one is more reliable?
9. What are the applications of spread spectrum modulation?
10. Design processing gain in spread spectrum modulation.

PART B- (5 x 16 = 80 Marks)

11. (a) (i) Distinguish between FM and PM by giving its mathematical analysis. (8 Marks)
(ii) Derive the relationship between the voltage amplitudes of the side band frequencies and the carrier and draw the frequency spectrum. (8 Marks)
(Or)
(b) (i) Discuss about the sets of side bands produced when a carrier is frequency modulated by a single frequency sinusoid. (8 Marks)
(ii) In an AM modulator, 500 KHz carrier of amplitude 20 V is modulated by 10 KHz modulating signal which causes a change in the output wave of +_ 7.5 V. Determine:
(1) Upper and lower side band frequencies
(2) Modulation Index
(3) Peak amplitude of upper and lower side frequency
(4) Maximum and minimum amplitudes of envelope. (8 Marks)

12. (a) What is known as Binary phase shift keying? Discuss in detail the BPSK transmitter and Receiver and also obtain the minimum double sided Nyquist bandwidth. (16 Marks)
(Or)
(b) (i) Illustrate the concept of 8 QAM transmitter with the truth table. (8 Marks)
(ii) What is the need for carrier Recovery? Explain the Costas loop method of carrier recovery. (8 Marks)

13. (a) (i) What is called companding? Briefly discuss the Analog companding. (8 Marks)
(ii) Discuss about the causes of ISI. (8 Marks)
(Or)
(b) (i) Explain in detail the Delta modulation transmitter and Receiver. (10 Marks)
(ii) Discuss the draw backs of delta modulation and explain the significance of adaptive delta modulator. (6 Marks)

14. (a) (i) Describe the most common error detection techniques. (12 Marks)
(ii) Discuss the function of a data modem. (4 Marks)
(Or)
(b) (i) Explain in detail the characteristics of IEEE 488 Bus. (10 Marks)
(ii) Briefly explain the three methods of error connection. (6 Marks)

15. (a) (i) What is a Pseudo noise sequence? What are the properties of Pseudo noise sequence? (8 Marks)
(ii) Describe the application of CDMA in wireless communication system. (8 Marks)
(Or)
(b) (i) With a block diagram explain, DS spread spectrum with coherent binary PSK. (10 Marks)
(ii) Explain the near- far problem in spread spectrum modulation? (6 Marks)