2012 B.Tech Electronics and Communications Engineering EC 801-Radar and Navigation of Kannur University, VIII Semester B.Tech. Question paper

VIII Semester B.Tech.-including part time Degree (Reg./Sup./Imp.)
Examination,April 2012
(2007 Admn.Onwards)
PT2K6/2K6EC EC 801-RADAR AND NAVIGATION
Time:3 Hours Max.Marks:100


I.Answer all the questions:

1)Derive the simple form of radar range equation. [Marks 5]
2)What is minimum detectable signal?Discuss the issues involved while setting the threshold level in radar receiver. [Marks 5]
3)Discuss the limitations to MTI performance. [Marks 5]
4)Compare mono pulse radar with conical scan radar. [Marks 5]
5)Discuss different types of detectors used in Radar. [Marks 5]
6)With a neat diagram explain the working of three cavity klystron amplifier used in radar transmitter. [Marks 5]
7)Write a note on Decca. [Marks 5]
8)Explain the role of satellites in navigation. [Marks 5]

II.Answer any one full question:
1)With a neat block diagram explain the operation of a pulse radar.Also discuss the applications of radar. [Marks 15]
OR

2)Write on explanatory note on
a)Maximum unambiguous range
b)Pulse repetition frequency and multiple time around echos.
c)Microwave plumbing and antenna losses. [Marks 15]
III.Answer any one full question:

1)List the advantages offered by digital MTI processing, with a neat block diagram explain digital MTI processor.Explain the operation of each block. [Marks 15]

OR
2) a)Explain the issues when the radar is on moving platform such as ship or aircraft.How to overcome the same ?
b)With a neat diagram explain the working of FM-CW radar. [Marks 15]

IV.Answer any one full question:

1) What are the advantages of electronically steered phased array antennas ?
Explain the radiation patterns and beam steering mechanisms in phased array antennas.[Marks 15]

OR
2)
a) Explain the role of duplexers in radar receiver, with diagrams explain the working of balanced duplexer.
b) Write a note on A-scope and PPI displays used in Radar systems. [Marks 15]

V. Answer any one full question:

1) Explain radio detection finding using
a)Loop antenna
b)Goniometer
c)Automatic direction finders. [Marks 15]

OR

2)
a) Explain the principle of VOR, with a neat block diagrams explain the VOR ground equipment and instrument part of VOR receiver.
b) Write a note on doppler navigation. [Marks 15] 

2012 Kannur University B.Tech Electronics and Communications Engineering VIII Semester B.Tech. (including part time) Degree (Reg./Sup./Imp.) Examination,April 2012 Question paper Question paper

VIII Semester B.Tech.-including part time Degree (Reg./Sup./Imp.)
Examination,April 2012
(2007 Admn.)
PT2K6/2K6EC EC 805(B)-DIGITAL IMAGE PROCESSING
Time:3 Hours Max.Marks:100


I.Answer all the questions:

a) Write notes on visual perception. [Marks 5]
b)Write notes on brightness, contrast, hue and saturation. [Marks 5]
c)Write notes on the degradation model. [Marks 5]
d)Explain the difference between image enhancement and restoration. [Marks 5]
e)Write notes on region splitting and merging. [Marks 5]
f)List out the application of neural network in image processing . [Marks 5]
g)Explain Huffman coding and its limitations. [Marks 5]
h)Write notes on vector quantization with suitable example. [Marks 5]

II. a) Compute the basis of KL transform for the input data
X1=(4,4,5) X2=(3,2,5) X3=(5,7,6) X4=(6,7,7) . [Marks 15]

OR

b)Explain in detail the wavelet transforms in two dimensions with suitable examples.

[Marks 15]
III. a)Explain in detail the Weiner filter with suitable examples and also list out the drawbacks of it. [Marks 15]

OR

b)Explain in detail with suitable examples, the special filtering. [Marks 15]

IV. a)Explain in detail about the neural network based image processing. [Marks 15]

OR

b)Explain in detail the pattern matching for object recognition in detail with suitable examples. [Marks 15]

V. a)Explain in detail the block transform coding in image compression. [Marks 15]

OR

b) Explain in detail the JPEG and MPEG standards in detail. [Marks 15] 

2011 B.Com Computer Applications Kannur University IV Semester B.A./B.Sc./B.Com./B.B.A./B.B.A.T.T.M./B.B.M./B.C.A./B.S.W. (CCSS-Regular) Degree Examination, March 2011 (Core Course) COMMERCE 4B07 COM: Informatics Skills Question paper

IV Semester B.A./B.Sc./B.Com./B.B.A./B.B.A.T.T.M./B.B.M./B.C.A./B.S.W. (CCSS-Regular) Degree Examination, March 2011
(Core Course)
COMMERCE
4B07 COM: Informatics Skills 

2012 Kannur University B.Tech Electronics and Communications Engineering VIII Semester B. Tech. - lncluding Part Time Degree (Reg/Sup./lmp.) Examination, EMBEDDED SYSTEMS Question paper

VIII Semester B. Tech. - Including Part Time Degree (Reg/Sup./lmp.)
Examination, April 2012
(2007 Admn. Onwards)
PT 2K6/2K6 EC 805(D) - EMBEDDED SYSTEMS

Time : 3 Hours Max Marks : 100
PART A 


1. Explain characteristic of embedded computing applications. [Marks 5]

2. Compare and contrast top-down and bottom-up methodology. [Marks 5]

3. Write short notes on RISC and CISC processor. [Marks 5]

4. Write short notes following l/Os

a) Port Based l/O

b) Bus Based l/O. [Marks 5]

5. Write short notes on embedded hardware architecture. [Marks 5]

6. Write short notes on Sensor network. [Marks 5]

7, Write short notes on round robin scheduling. [Marks 5]

8. Explain with an example of shared memory communication. [Marks 5]

PART B


1. a)Explain embedded system design process. [Marks 15]

OR

b)Explain the challenges in embedded computing system design. [Marks 15]

3. a)Write short notes on data operation in ARM. [Marks 15]

OR

b) Write short notes on data operation in SHARC. [Marks 15]

5. a)Write short notes on CAN Bus. [Marks 15]

OR

b)Design an Elevator controller. [Marks 15]

7. a)Write short notes on earliest deadline first scheduling.[Marks 15]

OR

b)Explain with an example of weighted round scheduling. [Marks 15] 

2011 Kannur University B.Tech Electronics and Communications Engineering Seventh Semester B.Tech. (Reg./Sup./lmp. - Including Part-Time) Degree Examination, November 2011 -TELEVISION ENGINEERING Question paper

VII Semester B.Tech. (Reg./Sup./lmp. - Including Part-Time) Degree
Examination, November 2011
(2007 Admn.)
PT 2K6|2K6 EC 704 TELEVISION ENGINEERING 


Duration :3 Hours Max. Marks : 100

PART _ A

1. What do you mean by image continuity ? Explain. [Marks 5]

2. Explain about positive and negative modulation. [Marks 5]

3. Mention the importance of color perception and define with an example. [Marks 5]

4. Mention about SECAM coder and decoder. [Marks 5]

5. What are all the merits of MPEG standard and suggest the application ? [Marks 5]

6. Mention about cable distribution system. [Marks 5]

7. Mention the need for compression and what are all the methods of compression ? [Marks 5]

8. Explain about HD digital TV. [Marks 5]

PART _ B 

9. a) Draw the block diagram of a TV transmitter and mention the significance of
the tuner system. [Marks 10]

b) Explain video and sound signal modulation. [Marks 5]

OR

10. a) Explain the working of a CCD camera with neat block diagram. [Marks 10]

b) Explain about VSB correction.

11. a) Explicate the working of picture tube with neat block diagram. [Marks 15]

OR

12. a) Mention the features formation of chrominance signal. [Marks 10]

b) What are the merits and demerits of Trinitron tubes. [Marks 5]

13. a) Explain with neat block diagram ACC amplifier circuits. [Marks 15]

OR

14. a) Explain about color signal matrixing. [Marks 10]

b) Write short notes on U and V demodulators. [Marks 5]

15. Explain about DCT based transform coding system. [Marks 15]

OR

16. Explain the concept of MPEG video compression techniques and mention the
standards. [Marks 15] 

2011 Kannur University B.Tech Electronics and Communications Engineering Seventh semester B-tech Semester B.Tech. (Reg./Sup./lmp. - Including Part Time) Degree Examination, November 201 1 Question paper

VII Semester B.Tech. (Reg./Sup./lmp. - Including Part Time) Degree
Examination, November 201 1
(2007 Admn.)
PT 2K6/2K6 EC 701 : MICRO ELECTRONICS TECHNOLOGY 

Time : 3 Hours Max. Marks: 100

I. a) Brief the effects of dopants during oxidation. [Marks 5]

b) Give the evaluation procedure of the simple CVD System. [Marks 5]

c) Draw the schematic of a simple Bicmos inverter and explain its operation. [Marks 5]

d) Brief the latch up in CMOS circuits. [Marks 5]

e) Give the different encodings used in stick diagram representation for nMOS process. [Marks 5]

f) List the various )" based design rules adopted for the transistor in nMOS, PMOS and CMOS. [Marks 5]

g) Describe the short comings of producing thick field oxide as isolation. [Marks 5]

h) Write short notes on ballistic nano transistors. [Marks 5]

II. a) i) Write short notes on types of photo resists. [Marks 5]

ii) Explain with a schematic, the CZO Charlski growth method in detail. [Marks 10]

OR

b) i) Briefly describe the advantage and disadvantages of Atmosphere pressure
CUD of diectrics. [Marks 5]

ii) State the Hicks laws. Give the mechanism factors for determination of
the diffusion coefficient D. [Marks 10]

III. a) i) Derive the expression for lds in a nMOS transistor in the different regions
of operations. [Marks 10]

ii) Mention the types of nMOS transistors and give their output characteristics
and made the parameters. [Marks 5]

OR

b) i) Explain the nMOS Fabrication process with required figures. [Marks 10 ]

ii) Compare CMOS and bifdar technology. [Marks 5]

IV. a) i) Give the Stick diagram of the NAND gate using nMOS and CMOS design
style. [Marks 8]

ii) Write short notes on Pass transistors and transmission gates. [Marks 7]

OR

b) Give the nMOS implementation of Sum and Carry output of a half adder
circuit. Also draw the layout of the above circuits. [Marks 15]

V. a) i) Explain the SWAMI Process in detail. Draw necessary figures. [Marks 10]

ii) Compare simple shallow trench isolation process and deep trench isolation
process. [Marks 5]

OR

b) i) Explain the different SOI methods in device isolation. [Marks 10]

ii) Write about the ohms law in nanometer scaled devices. [Marks 5] 

2011 Kannur University B.Tech Electronics and Communications Engineering Seventh Semester B.Tech. (Reg./Suppl./Imp.-Including(Part Time) Degree Examination, November 2O11 : SATELLITE COMMUNICATION Question paper

VII Semester B.Tech. (Reg./Suppl./Imp.-Including(Part Time) Degree
Examination, November 2O11
(2007 Admn.)
PT 2K6/2K6 EC 705 (B) : SATELLITE COMMUNICATION 

Time: 3 Hours Max. Marks : 100 

PART_ A 

1. Why satellite communication is so important ? [Marks 5]

2. Describe about orbital mechanics. [Marks 5]

3. What do you mean by look angle ? Explain. [Marks 5]

4. State Grassmans Law and mention its significance. [Marks 5]

5. Explain about spread spectrum transmission system. [Marks 5]

6. Explain about GPS position location principles. [Marks 5]

7. Describe satellite signal acquisition and mention its importance. [Marks 5]

8. Describe the concept of motion compensation. [Marks 5]


PART _ B 

9. a) Explain with neat diagram satellite communication system. [Marks 10] 

b) Mention about future trends in satellite communication system. [Marks 5] 

OR 

10. Explain about orbital effects in communication systems. 

11. a) Mention elaborately about satellite telemetry tracking systems. [Marks 15] 

OR 

12. a) Enlist the features of satellite antenna equipments. [Marks 10] 

b) Explain about primary power test methods. [Marks 5] 

13. a) Explain with neat block diagram FDMA and mention its importance. [Marks 15] 

OR 

14. a) Provide examples of TDMA frame structures and explain. [Marks 10] 

b) Explain about spread spectrum transmission system. [Marks 5] 

15. Design a down link/uplink for an educational institution and mention its 

specification. [Marks 15] 

OR 

16. Describe with neat block diagram satellite navigation system. [Marks 15]

2011 Kannur University B.Tech Electronics and Communications Engineering Seventh Semester B.Tech. (Reg./Sup./Imp. - Including Part Time) Degree Examination, November 2011 : SOFT COMPUTING Question paper

VII Semester B.Tech. (Reg./Sup./lmp. - Including Part Time) Degree
Examination, November 2011
(2007 Admn.)
PT 2K6/2K6 EC 705 (E) : INDUSTRIAL ELECTRONICS

Time : 3 Hours Max. Marks: 100

I. a) Explain how relative velocity is measured. [Marks 5]

b) Describe optical method of distance measurement. [Marks 5]

c) Explain the Gyroscopic force measurement. [Marks 5]

d) Explain the pressure measurement by Dead weight Gage. [Marks 5]

e) Describe the functioning of Head type flow meter. [Marks 5]

f) Discuss about Gamma ray method. [Marks 5]

g) Explain the operation of sound level meter. [Marks 5]

h) Discuss about the phase angle measurement. [Marks 5]

II. a) Describe the construction and working of any two type of accelarometers. [Marks 15]

OR

b) i) Describe the functioning of Magnetic pulse counting type speed
measurement. [Marks 8]

ii) Describe the construction and working of Gyroscopes. [Marks 8]

III. a) Describe the following force measurement methods with neat sketches.
i) Strain gage load cell [Marks 8]
ii) Vibrating wire force transducer. [Marks 7]

OR

b) Describe how pressure measurement by Mcleod gauge and Thermal

conductivity gauge. [Marks 15]

IV. a) Explain about the construction and operation of electromagnetic and ultrasonic

type flow meters. [Marks 15]

OR

b) Discuss about the following density measurement methods.
i) Buoyancy method. [Marks 7]
ii) Air pressure balance method. [Marks 8]

V. a) Describe the construction and working principle of optical pyrometer. [Marks 15]

OR

b) Describe any two methods of humidity measurement. [Marks 15] 

2011 Kannur University B.Tech Electronics and Communications Engineering Seventh Semester B.Tech. (Reg./Suppl./lmp.-lncluding-Part Time) Degree Examination, November 2011 (2007 Admn.) : MICROWAVE ENGINEERING Question paper

Are you looking for the old question papers of Kannur University-Electronics and communication-MICROWAVE ENGINEERING Here is the previous year question paper from Kannur University. This is the original question paper from the Electronics and Communications Engg. Seventh semester exam conducted by Kannur University in year 2011. Feel free to download the question paper from here and use it to prepare for your upcoming exams.

2011 Kannur University B.Tech Computer Science and Engineering VII Semester B.Tech. (Reg./Supple./Imp.-Including Part Time) Degree Examination : INTERNET AND MOBILE COMMUNICATION SYSTEM TECHNOLOGIES Question paper

VII Semester B.Tech. (Reg./Supple./lmp.-lncluding Part Time) Degree
Examination, November 2011

2K6 CS 701 : INTERNET AND MOBILE COMMUNICATION SYSTEM
TECHNOLOGIES 

Time : 3 Hours Max. Marks : 100

PART _ A 

1. Distinguish virtual circuit networks and datagram networks. [Marks 5]

2. How video compression is achieved in the internet ? [Marks 5]

3. Define CSMA/CD scheme and why CSMA/CD scheme failed in wireless networks. [Marks 5]

4. Enumerate the advantages of cellular systems with smallcells.[Marks 5]

5. Draw a GSM TDMA frame with its slots and bursts. How GSM avoids frequency
selective fading ? [Marks 5]

6. Define the Piconet and Scatternet networking in Bluetooth and mention its
advantages.[Marks 5]

7. Discuss the DHCP protocol with its basic configuration. [Marks 5]


8. Describe the basic objectives of WAP protocol. [Marks 5]


PART _ B 

9. a) i) Discuss the types of delay encountered in packet switched networks. [Marks 5]

ii) Illustrate queueing delay and packet loss in packet switched networks. [Marks 5]

b) Discuss RTSP with its features and illustrate client-server interaction using
BTSP. [Marks 5]

OR

10. a) Explain the mechanism involved in accessing audio and video through a
web server. [Marks 9]

b) Describe the tiered hierarchy of lSPs and state the characteristics of each
tier. [Marks 6]

11. a) i) Compare slow and fast frequency hopping spread spectrum systems. [Marks 5]

ii) Discuss the lnter symbol interference problem and state the measures to [Marks 5]
overcome this problem.

b) Discuss the three fundamental behaviours of radiowaves depending on their [Marks 5]
frequency.

OR

12. a) Explain DSSS systems, importance with its transmitter and Receiver block
diagram. [Marks 8]

b) Explain FDMA and CDMA mechanisms. [Marks 7]

13. a) Explain the IEEE 802.11 system architecture, protocolarchitecture and its
management. [Marks 9]

b) Explain the importance of L2CAP layer in Bluetooth and give the L2CAP
packet formats and services. [Marks 6]

OR

14. a) Draw the GSM protocol architecture for signalling and what are the tasks
associated with physical, datalink and network layer ? [Marks 8]
b) Discuss the features of HIPERLAN 2 and explain how it differc from HIPEHLAN 1. [Marks 7]
15. a) Explain the Route optimization procedure of Mobile IP protocol. [Marks 8]

b) Explain the classical enhancements of TCP for mobility with their advantages
and disadvantages.[Marks 7]

OR

16. a) i) State the requirements that led to Mobile lP. [Marks 5]

ii) What entities and terminology are needed to understand Mobile lP ? [Marks 5]

b) lllustrate the Mobile lP Packet delivery process. [Marks 5] 

2011 Kannur University B.Tech Computer Science and Engineering VII Semester B.Tech. (Reg/Suppl./Imp. - Including Part Time) Degree Examination: DESIGN AND ANALYSIS OF ALGORITHMS Question paper

VII Semester B.Tech. (Reg/Suppl./Imp. - Including Part Time) Degree
Examination, November 2011
(2007 Admn.)
2K6 CS 702 : DESIGN AND ANALYSIS OF ALGORITHMS 

Time : 3 Hours Max. Marks : 100



I. 1. Write short notes on Big O Notation. [Marks 5]

2. Use the master method to give tight asymptotic bounds for the recurrences problem. [Marks 5]
3. How do you construct a Huffman code ? [Marks 5]
4. Write short notes on elements of dynamic programming. [Marks 5]
5. What are the ways of solving NP complete problems ? [Marks 5]
6. Compare Euler tour with Hamiltonian cycle. [Marks 5]
7. Write short notes on probabilistic analysis. [Marks 5]
8. What are indicator random variables ? [Marks 5]

ll. A) Discuss the performance of quick sort algorithm with regards to partitioning. [Marks 15]

OR

B) Explain any two most common techniques used in amortized analysis. [Marks 15]
III. A) Explain the Divide-and-Conquer approach with a suitable example. [Marks 15]
OR

B) Discuss in detail about Back Tracking. [Marks 15]
IV. A) Show that the Hamiltonian-path problem is NP complete. [Marks 15]

OR

B) Show that the subset-sum problem is solvable in polynomial time if the target

value t is expressed in unary. [Marks 15]

V. A) Discuss randomized algorithm for n-Queen problem. [Marks 15]

OR

B) Bring out the importance of Dixons integer factorization algorithm with a real

life example. [Marks 15] 

2011 Kannur University B.Tech Computer Science and Engineering VII Semester B.Tech. (Reg./Sup./Imp - Including Part time) Degree Examination, November 2011 : COMPUTER GRAPHICS AND MULTIMEDIA Question paper

VII Semester B.Tech. (Reg./Sup./Imp - Including Part time) Degree
Examination, November 2011
(2007 Admn.)
2K6CS 703 : COMPUTER GRAPHICS AND MULTIMEDIA 

Time : 3 Hours Max. Marks : 100

Instruction : Answer all questions.

1. a) Mention the different attributes used for drawing line and arc. [Marks 5]

b) Explain about exterior clipping. [Marks 5]

c) Write any two properties of Bezier curves. [Marks 5]

d) Write short notes on BSP trees. [Marks 5]

e) Define multimedia and describe various attributes of multimedia. [Marks 5]

f) Explain the different parameter mention for HDTV. [Marks 5]

g) Explain the different types of compression technique. [Marks 5]

h) Define JPEG and mention component of JPEG. [Marks 5]

2. a) Describe any two hard copy devices. [Marks 8]
b) Device the window-to-view port transformation . [Marks 7]

OR

a) Describe matrix formulation of 2-D transformation : translation, rotation and
scaling. [Marks 7]
b) Discuss the following algorithms used for line :

i) The basic incremental algorithm

ii) Mid point line algorithm. [Marks 8]

3. a) Explain the different types of sweep representation. [Marks 8]

b) Describe the procedure for drawing Bezier curves. [Marks 7]

OR

a) Explain the Z-Buffer algorithm for hidden surface removal. [Marks 8]

b) Explain the properties of B spline. How it is differ from Bezier. [Marks 7]

4. a) Explain the list of Multimedia applications. [Marks 7]

b) Explain the data stream characteristics for continuous media. [Marks 8]
OR

a) What are the devices and software to support MlDl ? [Marks 7]


b) Explain the following :
i) How the computer-generated speech signal also ?
ii) How the speech signal transmit over network ? [Marks 8]

5. a) Distinguish between multimedia system and hyper media system. [Marks 7]

b) Explain the different properties of H.261 and H.263. [Marks 8]

OR

a) Explain the steps of lossy sequential DCT based coding modes. [Marks 7]

b) What is editing features ? Explain its briefly. [Marks 8] 

2011 Kannur University B.Tech Computer Science and Engineering VII Semester B.Tech. (Reg./Sup./Imp. - Including part Time) Degree Examination, INTERNET AND WEB PROGRAMMING WITH JAVA Question paper

VII Semester B.Tech. (Reg./Sup./Imp. - Including part Time) Degree
Examination, November 2011
(2007 Admn.)
2K6 CS 704 - INTERNET AND WEB PROGRAMMING WITH JAVA 

Time : 3 Hours Max. Marks : 100

I. 1) Describe the creation of a simple interface using Swing that will enable a
user to input the following partitioned fields :

. First and Last names

. Email Address

. Password and its validation. [Marks 5]

2) Explain with an example about the event handling using Java Swing with an example. [Marks 5]

3) How is data manipulation and data navigation done in Java Database Connectivity ? [Marks 5]

4) Explain how a servlet is created and executed with an example. [Marks 5]

5) Illustrate with an example about how control statements are executed in HTML. [Marks 5]

6) Discuss about the Document Object Mode! with an application for it. [Marks 5]

7) Describe about the standard actions in server side scripting language. [Marks 5]

8) Illustrate with an example about how dynamic contents are added and executed in PHP. [Marks 5]

II. A) Define a Layout. Mention the different types of layouts implemented in Java with an example for each. [Marks 15]

OR

B) Explain in detail about the Swing basic containers and Swing components
with examples. [Marks 15]

III. A) Explain the life cycle of a Servlet. Also explain how the session tracking is
done in Servlets ? [Marks 15]

OR

B) Define JDBC. Mention the components used in JDBC. List out the steps to
Connect to the database using JDBC with an example. [Marks 15]

IV. A) Illustrate with an example, the working of HTML tags, Frames and forms. [Marks 15]

OR

B) With a complete example, illustrate the working of the Simple Object Access
Protocol. [Marks 15]

V. A) Explain any one application in detail using PHP. Also mention the steps
used for solving the application. [Marks 15]

OR

B) Define a JSP. Mention its advantages and applications. Also explain with an
example about the Scripting components involved in the JSP. [Marks 15] 

2011 Kannur University B.Tech Computer Science and Engineering Seventh Semester B.Tech. (Reg./Sup./Imp. - Including part Time) Degree Examination:ADVANCED DATABASE SYSTEMS Question paper

Are you looking for the old question papers of Kannur University- Computer Science and Engineering? Here is the previous year question paper from Kannur University. VII Semester B.Tech. (Reg./Sup./Imp. - Including part Time) Degree Examination:ADVANCED DATABASE SYSTEMS.Feel free to download the question paper from here and use it to prepare for your upcoming exams.

VII Semester B.Tech. (Reg./Sup./Imp. - Including part Time) Degree
Examination, November 201 1
(2007 Admn.)
2K6CS 705 (A) : ADVANCED DATABASE SYSTEMS 
Time : 3 Hours Max. Marks : 100 

PART _ A

1. a) Describe structured types and inheritance in SQL. [Marks 5]

b) Describe the Multiset types in SQL. [Marks 5]

c) Explain briefly on Page Rank in Google Search Engine. [Marks 5]

d) How the text mining applied in data-mining techniques ? [Marks 5]

e) Give the advantage of centralized system with diagram. [Marks 5]

f ) Explain the three different portioning techniques. [Marks 5]

g) Write notes on time specification in SQL. [Marks 5]

h) Explain Real-Time Transaction Systems. [Marks 5]

PART _ B 

2. a) Explain the object identity and reference types in SQL. [Marks 15]

OR

b) Explain the Nesting and Unnesting with example. [Marks 15]
3. a) Explain the concept of Ranking with example. [Marks 15]

OH

b) Explain the information retrieval and structured data. [Marks 15]
4. a) Explain the two forms of inter-operation parallelism and query optimization. [Marks 15]

OR

b) Explain the concurrency control in Distributed Databases. [Marks 15]

5. a) Explain the indexing of spatial data. [Marks 15]

OR

b) Explain briefly on transactional workflows. [Marks 15] 

2011 Kannur University B.Tech Computer Science and Engineering Seventh Semester B.Tech.CSE (Reg./Sup./Imp. - Including Part Time) Degree Examination: COMPUTATIONAL COMPLEXITY Question paper

Are you looking for the old question papers of Kannur University Computer Science and Engineering? Here is the previous year question paper from Kannur University.VII Semester B.Tech. (Reg./Sup.Imp. - Including Part Time) Degree Examination:INFORMATION STORAGE MANAGEMENT.Feel free to download the question paper from here and use it to prepare for your upcoming exams.

VII Semester B.Tech. (Reg./Sup./Imp. - Including Part Time) Degree
Examination, November 2011
(2007 Admn.)
2K6CS 705 (F) : COMPUTATIONAL COMPLEXITY 

Time:3 Hours Max. Marks: 100

Instruction : Answer all questions.

I. a) Write notes on Karp-completeness based on Karp theorem. [Marks 5]

h) Write notes on space complexity. [Marks 5]

c) Write notes on randomized reduction. [Marks 5]

d) Write notes on Valiants theorem. [Marks 5]

e) Write notes on interactive proofs with suitable examples. [Marks 5]

f) Explain multi-party communication complexity. [Marks 5]

g) Write notes on quantum computation with suitable examples. [Marks 5]

h) Write notes on random walks. [Marks 5]

II. a) Explain the NP problems and show that travelling salesman problem is an NP
complete problem. [Marks 15]
OR

b) Explain in detail the NP complete problems. Prove that the satisfiability problems are NP complete. [Marks 15]

III. a) Explain about major aspects of the failure probability of randomized algorithms. [Marks 8]

b) Explain in detail the concept of counting complexity. [Marks 7]

OB

c) Explain PTMs in detail with suitable examples. [Marks 15]

IV. a) Explain in detail the randomized decision trees with suitable examples. Write
notes on randomized algorithms. [Marks 15]
OR

b) Write notes on differences between interactive proofs and mathematical proofs
by giving suitable examples. [Marks 15]
V. a) Explain polynomial time sampling with example. [Marks 10]

b) Write notes on derandomization. [Marks 5]

OR

c) Explain in detail the PCP and the hardness of approximation with the help of
suitable examples. [Marks 15] 

2012 Kannur University B.Tech Electronics and Communications Engineering VI Semester B.Tech. (Regular/Supplementary/Improvement - Including Part Time) Degree Examination PT 2K6/2K6 EC 603 : RADIATION AND PROPAGATION Question paper

VI Semester B.Tech. (Regular/Supplementary/Improvement - Including
Part Time) Degree Examination, May 2012
(2007 Admn. Onwards)
PT 2K6/2K6 EC 603 : RADIATION AND PROPAGATION 

Time : 3 Hours Max. Marks : 100

Instruction : Answer all questions.

PART- A

1. Explain directivity and gain. How are they related ? [Marks 5]

2. Explain effective height of an antenna. [Marks 5]

3. Write a note on end fire arrays. [Marks 5]

4. Explain the multiplication of radiation patterns. [Marks 5]

5. Discuss the radiation pattern of a V-antenna. [Marks 5]

6. Write a note on log-periodic antenna. [Marks 5]

7. Write a note on skip distance. [Marks 5]

8. Discuss multihop propagation. [Marks 5]

PART- B

9. a) Write a note on each :
i) Hertzian dipole
ii) Beam solid angle
iii) Half power band width. [Marks 15]

OR

b) i) A thin dipole antenna is Lambda/8 long. If its loss resistance is 1.5 ohm. Find its
radiation resistance and efficiency. [Marks 8]
ii) state and prove Babinets principle for complementary antennas. [Marks 7]
10. a) Find the array factor and draw the normalized radiation pattern of a broad
side array of five isotropic radiation spaced Lambda/2 apart.The excitation amplitude
ratios are 1 : 2 : 3 :2: 1. Compare the first side lobe level with that of a five
element uniform array. [Marks 15]

OR

b) i) Design a 6 element end fire array with l,/2 spacing between elements .
The pattern is to be optimum with a side lobe level 13.9 dB down the main
lobe maximum. [Marks 10]
ii) Write a note on tapering of array. [Marks 5]

11. a) Write brief notes on:
i) Parabolic reflector antenna
ii) V-antenna
iii) Micro strip antenna. [Marks 15]

OR

b) Discuss the design procedure of a Yagi-uda antenna ? What are its applications ? [Marks 15]


12. a) Write notes on :
i) Ionospheric storm
ii) Whistling
iii) Fading. [Marks 15]

OR

b) Discuss the features of ground wave propagation, tropospheric scatter
propagation and spherical earth propagation. [Marks 15] 

2009 Kerala University B.Tech Industrial Engineering Fourth Semester B.Tech. Degree Examination, December 2009 Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
Branch : Industrial
03-406 : THERMAL ENGINEERING (N)
Time : 3 Hours Max. Marks : 100
Instructions : 1) Answer all questions in Part – A.
2) Each question in Part A carries 4 marks.
3) Answer any one full question from each Module in Part – B.
4) Each question in Part B carries 20 marks.
5) Use of Steam Tables, Mollier Chart or Heat Transfer Data
Book is permitted.
PART – A
1. Explain the significance of Mollier chart.
2. With the help of T.S. diagram, explain the modified Rankine cycle.
3. Discuss the effect of friction on the performance of steam nozzles.
4. Explain why compounding is necessary for steam turbines.
5. Discuss the effect of fouling on the performance of heat exchangers.
6. Give a classification of air compressors.
7. What are the characteristics of an ideal fuel ?
8. Sketch an arrangement to measure the fuel consumption of an IC engine.
9. Compare between reciprocating and rotary compressors.
10. What are the different types of combustion chambers for turbines ?

PART – B
Module – I
11. a) Steam at a temperature of 210°C and y bar is expanded by throttling process to
a pressure of 3 bar. It is then expanded isentropically to a pressure of 0.5 bar.
Using Mollier chart determine the change in entropy and enthalpy during the
processes.
b) Steam at a pressure of 10 bar and 200°C enters a group of nozzles. The exit
pressure from the nozzle is 1 base. The throat decimeter of the nozzle is 6.5
mm. Determine the number of nozzles needed to develop 200 kW with a specific
steam consumption of 15 kg/kWh.
12. a) With the help of a neat sketch explain a Benson Boiler.
b) The blade tips of a reaction turbine arc inclined at 35° and 20° in the direction of
motion. The guide blades are similar to moving blades. But reversed in direction
steam got a pressure of 2 bar and dryness fraction 0.9 at a place in turbine where
the drum decimeter is 1 m and blade weight is 100 mm. The turbine runs at 1000
rpm. Determine the mass flow and the power developed.
Module – II
13. a) Distinguish between pre-ignition and detonation.
b) The results of analysis of coal is given below Carbon = 85%, Hydrogen = 5%,
Oxygen = 4%, moisture = 3% and the rest ash.
Theoretically, how much air will be required for complete combustion of 1 kg of
coal ?
If 10% excess air is supplied, obtain the volumetric analysis of dry products of
combustion.
14. The following observations were made during a test of a two-stroke cycle oil engine
Ambient temperature = 30° C
Cylinder diameter = 20 cm.
Stroke length = 30 cm.
Speed = 500 rpm
Brake drum decimeter = 120 cm.
-3- 8064
Net load on the brake drum = 500 N.
Area of indicator diagram = 2.8 cm2.
Length of indicator diagram = 5 cm.
Spring index of the indicator spring = 55 N/cm.
Oil consumption = 3.8 kg/hr.
Calorific value of oil = 40000 kJ/kg.
Determine the brake power, indicated power, mechanical efficiency and the indicated
thermal efficiency.
Module – III
15. a) Prove that for a two stage compressor with perfect intercooling the work input
is minimum when the intermediate pressure is the geometric mean between the
suction and delivery pressures.
b) Describe a closed cycle gas turbine with reheating.
16. a) Explain the working of a centrifugal compressor.
b) In a gas turbine plant working on Brayton cycle, the air at the inlet is at 27°C and
at a pressure of 0.1 MPa. The pressure ratio is 6.25 and the maximum temperature
is 800°C. The turbine and compressor efficiencies are each 80%. Find
i) The compressor work per kg of air.
ii) The turbine work per kg of air
iii) The heat supplied per kg of air.
iv) The cycle efficiency and
v) The turbine exhaust temperature.
————————— 

2009 Kerala University B.Tech Production Engineering Fourth Semester B.Tech. Degree Examination, December 2009 Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
Branch : Production
03.402 - COMPUTER PROGRAMMING (P)
Time : 3 Hours Max. Marks : 100
PART – A
Answer all questions. Each question carries 4 marks.
1. a) What is meant by "Von Neumann Architecture" of a digital computer ?
b) Differentiate RAM and ROM.
c) Define High level language, low level language and medium level language.
d) Define flow chart.
e) Write an algorithm to find the sum of elements of an array.
f) Write the syntax with example of "If-else" statement.
g) What is a functional program ?
h) Define flow chart.
i) Write the Newtons Forward formula.
j) What is meant by 3
1 rule of Simpson ? (4×10=40 Marks)
PART – B
Answer all questions taking one from each Module. Each question carries 20 marks.
MODULE – I
2. a) Explain the functional units of a Digital Computer.
b) Discuss the features of any two of the operating systems.
OR

3. a) Write the algorithm and flowchart to find the sum and average of 100 number of
real values.
b) Differentiate the primary and secondary storage devices with examples.
MODULE – II
4. a) Write a C program to compute the complete solutions of a quadratic equation
and print roots in a neat form.
b) What is meant by the command-line arguments ? Write an example for the
command-line argument.
OR
5. a) With suitable examples, explain the various types of "IF" control structure of
C.
b) Write a C program without using string handling functions to count the number
of "blanks" in a sentence.
MODULE – III
6. a) Find the real root of x3 – 4x – 9 = 0 which lies between 2.625 and 2.75 correct
upto four significant digits.
b) Write a C program for the Newton-Raphson method.
OR
7. a) Evaluate ??
2
1
e0.5x dx using four intervals.
b) Write a C program for Newtons forward difference method. (20×3=60 Marks)
–––––––––––––––– 

2009 Kerala University B.Tech Production Engineering Fourth Semester B.Tech. Degree Examination, December 2009,03-403 : PRODUCTION PROCESS I (P) Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
Branch : Production
03-403 : PRODUCTION PROCESS I (P)
Time : 3 Hours Max. Marks : 100
PART – A
Answer all questions. Each question carries 4 marks.
I. a) List any four pattern allowances commonly used.
b) How is sand conditioning and reclamation carried out ?
c) What are the functions of Riser ?
d) Explain Chvorinovs rule.
e) Explain any four casting defects.
f) Explain the process of shell moulding.
g) Compare sand casting with permanent mould casting.
h) With a neat sketch explain the process of metal spinning.
i) Compare the grain flow in forged components with cast products.
j) Explain with a sketch, the wire drawing process. (10×4=40 Marks)
PART – B
Answer one full question from each Module.
MODULE – I
II. a) What are the factors to be considered in the selection of pattern material ? 10
b) Explain the mechanism of dentritic growth. 10
OR

III. a) What are the ingredients and properties of moulding sand ? 10
b) Explain the design procedure of sprue and riser. 10
MODULE – II
IV. a) Describe the Centrifugal casting process. Give two specific application of
centrifugal casting process. 10
b) What are the types of rolling mills ? Explain the defects in rolled products. 10
OR
V. a) With a neat figure explain CO2 moulding process. List the advantages and
disadvantages. 10
b) With neat sketches, explain the rolling of a round bar from a billet having
square cross section. 10
MODULE – III
VI. a) What are the classifications of forging operations ? 10
b) With a neat figure, explain metal spinning process. What are its limitations ? 10
OR
VII. a) Explain with figures, different stages in the forging of a connecting rod for an
IC engine. 10
b) Explain any three types of press working operations. Give specific application
for each. 10

2009 Kerala University B.Tech Production Engineering Fourth Semester B.Tech. Degree Examination, December 2009,03.404 : PRODUCTION DRAWING (P) Question paper

Fourth Semester B. Tech. Degree Examination, December 2009
(2003 Scheme)
03.404 : PRODUCTION DRAWING (P)
Time : 3 Hours Max. Marks : 100
Instructions: Answer any two questions from Part A. Part B is compulsory.
Only first angle projection is to be used. Any missing dimensions
may be suitably assumed.
PART – A
1. Calculate the limit dimensions for an interference fit on the hole basis system for the
data given below.
Basic size of the shaft = ?? 40 mm
Maximum interference = 0.045 mm
Tolerance on the hole = 0.025 mm
Tolerance on the shaft = 0.015 mm
Check the calculated diamensions. Represent the same on a schematic drawing showing
all dimensions fully. 10
2. i) What is meant by Tolerance zone ? 4
ii) Show different methods of indicating Tolerances by letters and numerical symbols. 6
3. i) Explain the different symbols used for the indication of the quality of surface
texture on drawings. 4
ii) What do you mean by surface texture ? Explain the nomenclature of surface
texture with a neat sketch. 6
PART – B
4. Details of a 40 mm stop valve are shown in the figure. Draw the following fully
dimensioned views to a suitable scale. (i) Right half sectional elevation (ii) End view
from outlet side and (iii) Sectional plan. Also make a parts list. Show the necessary
machining symbols and give suitable tolerances. Missing dimensions, if any may
be suitably assumed. 80

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2009 Kerala University B.Tech Automobile Engineering Fourth Semester B.Tech. Degree Examination, December 2009,03-406 : AUTOMOBILE ENGINEERING DRAWING (U) Question paper

 (Pages : 2) 8070
Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
Branch : Automobile
03-406 : AUTOMOBILE ENGINEERING DRAWING (U)
Time : 3 Hours Max. Marks : 100
Note : Answer all questions.
1. Draw the wiring diagram of a horn circuit for a scooter. 10
2. Draw the starter motor circuit diagram of a passenger car. 10
3. Figure 1 gives the view of a piston. Draw the following views, after assembly.
1) Half suctional elevation
2) A view looking in the direction of the lock nut. 60
4. a) Give the BIS specifications for indicating surface finishes on drawings. 10
b) Sketch a master cylinder and indicate the parts. 10

8070
Fig. 1
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2009 Kerala University B.Tech Electronics and Communications Engineering Fourth Semester B.Tech. Degree Examination, December 2009,03.402: SOLID STATE DEVICES AND CIRCUITS (E) Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
03.402: SOLID STATE DEVICES AND CIRCUITS (E)
Time : 3 Hours Max. Marks : 100
Instruction: Answer all questions from Part A and any three questions from
Part B choosing not more than one question from each module.
PART – A
1. Prove that the collector current of the transistor in the active region in CE
configuration is Ic = ?? IB + (1 + ?? ) Ico.
2. What are the factors concerned for drifting of the operating point of a transistor
amplifier ?
3. For a N- channel JFET IDSS = 16mA, VP = 6V, Gmo = 4000 ps. Calculate the drain
current and trans conductance at VGS = – 4V.
4. Explain the working of a class C amplifier and give an application.
5. Determine the voltage gain, input and output impedance for voltage series feed
back having A= – 100, Ri = 100 k?? , Ro = 20k ?? for feed back with B = – 0.1.
6. Explain why cristal oscillator have very high frequency stability.
7. What is meant by drift compensation ?
8. Define slew rate of an opamp.
9. Explain how opamp is used as integrator.
10. What is the effect of noise on zero crossing detector. (4×10=40 Marks)

Module – I
11. a) What is the need of bias compensation in transistor amplifiers and with a neat
sketch explain one method of Bias compensation.
b) Draw the equivalent circuit of a transistor amplifier in CB configuration using
h parameters and derive expressions for current gain, input impedance, voltage
gain, output admittance and power gain.
12. a) Draw a self biased JFET common source amplifier and explain its operation.
b) Derive an expression for the voltage gain of a source follower JFET amplifier
with a drain resistance RP.
Module –II
13. a) Draw the circuit diagram of a transformer coupled amplifier and explain the
function of each of the components used. Plot its frequency response.
b) Explain the operation of a series fed class A amplifier and obtain the expression
for over all efficiency. Also find the maximum efficiency.
14. a) Discuss about the factors responsible for causing distortion in amplifiers.
b) What is negative feed back and how it will improve the stability of an amplifier ?
Explain the working of an RC phase shift oscillator.
Module – III
15. a) Compare the characteristics of 741 and 301 IC operational amplifiers.
b) An amplifier with 2.2 K ?? input resistance and 40 k ?? output resistance has a
voltage gain of 80. The amplifier is modified to provide 15% negative feed back
in series with the input. Calculate
i) Voltage gain with feed back
ii) Rif and Rof
16. a) Discuss the necessity for frequency compensation in opamps.
b) Explain how an op-amp can be used as a voltage level detector. List the important
characteristics of a comparator. (3×20=60 Marks)
—————— 

2009 Kerala University B.Tech Electronics and Communications Engineering Fourth Semester B.Tech. Degree Examination, December 2009, 03.403 : DIGITAL ELECTRONICS AND LOGIC DESIGN (E) Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
03.403 : DIGITAL ELECTRONICS AND LOGIC DESIGN (E)
Time : 3 Hours Max. Marks : 100
Instruction: Part A is compulsory. Answer one full question from each
Module in Part B.
PART – A
Answer all questions :
1. In what ways digital circuits are superior to analog circuits.
2. Give the truth table and circuit of a half subtractor.
3. Realise the function f ?? AB ?? CD ?? B using NOR gates.
4. Explain race-around problem. Mention the ways to eliminate it.
5. Draw the internal circuit details of a TTL NAND gate.
6. Perform the following BCD addition
i) 1001 + 0100
ii) 01100111 + 01010011
7. Draw the internal circuitary of 555 IC timer.
8. Write a short note on Schottky transistors.
9. What are the different methods of representing negative numbers ?
10. State and explain sampling theorem. (4×10=40 Marks)

PART – B
Answer one full question from each Module.
Module – I
11. a) Explain weighted codes, unweighted codes and alphanumeric codes.
b) Convert the following :
i) 227.5810 to XS-3 code
ii) (1101.011)2 to decimal
iii) (236)10 to hexadecimal
iv) DADA16 to Octal
12. a) State and prove De-Morgans theorem of Boolean algebra.
b) Perform the following binary subtractions using 2s complement
i) 110011 – 00010000
ii) 01100 – 00011
iii) 0011.1001 – 0001.1110
Module – II
13. a) Give the internal circuitry of CMOS NAND gate and explain its operation.
b) Design a parity checker/generator and explain the working of the same.
14. a) Find the minimal POS expression for F (W, X, Y, Z) = ?? (1, 4, 5, 6, 11, 12, 13, 14, 15)
b) Draw the logic diagram of a full subtractor using the NAND gates.
Module – III
15. a) Draw the circuit of a 4 bit binary up/down counter and explain its operation.
b) Design and explain BCD to 7 segment decoder.
16. a) Explain the operation of a shift register. Show how it can be used for serial to
parallel conversion of a data sequence.
b) Draw the circuit of a D flip flop using NAND gates only and verify its truth table.
(20×3=60 Marks)
––––––––––––––––– 

2009 Kerala University B.Tech Electrical and Electronics Engineering Fourth Semester B.Tech. Degree Examination, December 2009,03-404 : ELECTRICAL MEASUREMENTS – I (E) Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
03-404 : ELECTRICAL MEASUREMENTS – I (E)
Time : 3 Hours Max. Marks : 100
PART – A
Answer all questions. Each question carries 4 marks.
1. What are the three general classes of error ?
2. Why do you need a battery in an ohm meter ?
3. Compare the performance of induction type watt meter with that of a electrodynamic
type.
4. Explain what is meant by the phase angle error of a wattmeter.
5. What are the precautions to be taken in using headphone as a detector ?
6. Describe the principal differences between the null and the equal deflection
measurement technique.
7. What are primary, secondary and tertiary measurements ? Explain with examples.
8. What type bridge is best suited for measurement of a) high Q and b) low Q
component ?
9. What are the limitations of Wheatstone bridge and how are they overcome in Kelvin
double bridge for small resistance ?
10. A voltmeter is calibrated to read from 100V to 200V. Its accuracy is specified with
in ?? 2%. Find the maximum error. (10×4=40 Marks)

PART – B
Answer any one question from each Module. Each question carries 20 marks.
MODULE – I
11. a) Describe the working of a PMMC instrument. As applied to this instrument
describe the terms : i) Over damped ii) Under damped and iii) Critically
damped. 12
b) A basic dc ammeter circuit uses a PMMC meter movement of 1 mA, 100??
internal resistance and an external shunt of 0.001??. What is the range of current
the circuit can be measured ? 8
12. a) Explain the construction of an analog multimeter. 12
b) What are the common sources of error occurring in electrical measuring
instruments ? 8
MODULE – II
13. a) Describe how you can calibrate an ammeter with the help of the potentiometer ? 10
b) Discuss the method of increasing the range sensitivity of dc potentiometer. 10
14. a) Discuss in detail the types of errors that may be encountered while measuring
power by means of an electro dynamic wattmeter. 10
b) Explain the one method of 3 phase power measurement. 10
MODULE – III
15. a) Derive the balance condition of Anderson bridge for measurement of inductance
of a coil. Draw its vector diagram. 10
b) What is Maxwells bridge ? Describe its working. Where do we use such bridge ? 10
16. a) The quality factor Q of a coil is ?? 10. Suggest a bridge to measure the values of
inductor and its series resistance. 10
b) How can you measure the unknown value of applied frequency using the above
bridge ? 10
–––––––––––––––– 

2009 Kerala University B.Tech Electrical Engineering Fourth Semester B.Tech. Degree Examination, December 2009,03.405 : ENGINEERING MATERIALS SCIENCE (E) Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
03.405 : ENGINEERING MATERIALS SCIENCE (E)
Time : 3 Hours Max. Marks : 100
Instruction : Answer all questions from Part A and three questions from
Part B choosing one question from each Module.
PART – A
1. Explain the process of decinisation in gases.
2. Discuss the desirable properties of gaseous insulator.
3. What are the advantages of SF6 when it is used in power switch gears ?
4. Explain the terms Burst Corona and Trichel pulses.
5. Discuss about the treatment of transformer oil.
6. Discuss the properties of Mica as a dielectric.
7. What are the advantages of using plastic films insulation over the paper insulation?
8. What is meant by dielectric loss?
9. Distinguish between Ferri and Anti-Ferro Magnetic materials and their application.
10. Write short notes on HRC cartridge fuse.
PART – B
MODULE – I
11. a) What is time lag ? Discuss its components and the factors which affect these
components.
b) What are electronegative gases ? Why is the breakdown strength is higher in
these gases compared to that in other gases ?

12. a) What are the applications of vacuum insulation in power distribution systems ?
b) Discuss the various processes of ionization and decay in gaseous dielectrics.
MODULE – II
13. a) Explain the phenomena of electric conduction in liquids. How does it differ
from that in gases ?
b) Describe the properties and applications of ceramic and glass as dielectric
materials.
14. a) Explain with neat diagram, the testing of transformer oil.
b) How do the temperature and moisture affect the breakdown strength of solid
dielectrics ?
MODULE – III
15. a) Using Domain theory, explain the hysteresis in ferro magnetic materials.
b) Distinguish between hard and soft magnetic materials.
16. a) Compare the properties of copper and aluminium.
b) Write short notes on :
i) Hard and soft super conduction
ii) Diamond.
———————— 

2009 Kerala University B.Tech Electrical Engineering Fourth Semester B.Tech. Degree Examination, December 200903.406 : POWER SYSTEM ENGINEERING – I (E) Question paper

Fourth Semester B.Tech. Degree Examination, December 2009
(2003 Scheme)
03.406 : POWER SYSTEM ENGINEERING – I (E)
Time : 3 Hours Max. Marks : 100
PART – I
Answer all questions.
1. What is the need for transposition of overhead lines ?
2. What are the advantages of bundled conductors ?
3. Explain the concepts of GMD and self GMD.
4. Describe the reasons for grading of cables.
5. Write brief notes on sag template and stringing chart.
6. What is meant by string efficiency and how can it be improved ?
7. How do the load factor and diversity factor influence the cost of generation ?
8. What are the requirements of an ideal traction system ?
9. Discuss the merits and demerits of direct electric arc furnace.
10. Distinguish between electric arc welding and resistance welding. (10×4=40 Marks)

PART – II
Each question carries 20 marks.
Module – I
11. a) Derive from first principles, the capacitance per km to neutral of a 3-phase
overhead transmission line with unsymmetrical spacing of conductors.
b) Calculate the chraging current of a 3-ph, 50 Hz, 33 KV, 3 conductor overhead
transmission line, 10 Km long, having conductor dia 20 mm, spaced 2.5 ms, at
the corners of an equilateral triangle.
OR
12. a) Explain the significance of using per unit system in power system analysis.
b) A 3-ph, 220 KV, 50 Hz transmission line, 200 Km long transmits a load of
75 MW at 0.8 p.f. lagging at the receiving end. Resistance of the line/ph/km =
0.8 ohm, susceptance/ph/km = 6 ?? 10–6 mho, Reactance/ph/km = 0.8 ohm.
Determine :
a) the ABCD constants of the line and
b) sending end voltage and current
Module – II
13. a) Describe the various systems of power transmission and compare the conductor
material (volume) for 3-ph, 3 wire a.c. with that of 3 wire d.c. State the assumptions
made.
b) A 33 KV, 3-ph, underground cable, 4 km long uses three single core cables.
Each of the conductors has a diameter of 2.5 cm and the radial thickness of
insulation is 0.5 cm. The relative permitivity of the dielectric is 3.0. Determine (a)
the capacitance of the cable/ph and (b) charging current/ph.
OR
-3- 8075
14. a) Explain briefly about the various conductor materials used for overhead lines.
Give their relative advantages and diadvantages.
b) Find the disruptive critical voltage and visual critical voltage (for local and general
corona) for a 3-ph line having 1 cm dia conductors, spaced in 3 m delta
arrangement. Assume temperature 26°C, pressure 74 cm of mercury, surface
factor 0.85 and irregularity factor for local visual corona 0.72 and general visual
corona 0.82.
Module – III
15. a) What are the causes of low power factor in an electrical system and discuss the
methods for improving the power factor ?
b) A consumer takes a steady load of 300 KW at a lagging p.f. of 0.7 for
3000 hours in a year. The tariff is Rs. 130/KVA of M.D. annually and 4 paise per
KWh. The annual cost of phase advancing plant is Rs. 13.00 per KVAR.
Determine the annual saving, if the p.f. of the load is improved to 0.9.
OR
16. a) What is specific energy consumption ? Explain the factors that affect the specific
energy consumption of a train operating at given scheduled speed.
b) The average distance between stops on a level section of railway is 1.5 Km. The
train weighing 200 tonnes has a scheduled speed of 32 km/hr, the duration of the
stops being 25 sec. The acceleration is 1.9 km/hr/sec and braking retardation is
3.2 km/hr/sec. Train resistance to traction is 40 Nw/tonne. Allowance for rotational
inertia is 10%. Calculate the specific energy output in watt hours per tonne km
for the run. Assume trapezoidal speed-time curve.