ANNA UNIVERSITY – COIMBATORE
B.E.\B.TECH.DEGREE-EXAMINATION-DECEMBER 2009
FIFTH SEMESTER-ELECTRICAL&ELECTRONIC ENGG.
COMMUNICATION ENGINEERING
PART A-(2*20=40)
1. Why modulation is necessary in electronic communication systems.
2. Define modulation index and relate it with depth of modulation.
3. For an AM-DSBFC modulator with a carrier frequency fc=100kHz and a maximum modulating signal frequency fm=5kHz draw the output frequency spectrum.
4. What is frequency modulation.
5. List the five types of transmission line losses.
6. Determine SWR of a transmission line with incident voltage Ec=5v and reflected voltage Er=3v.
7. Define critical frequency and maximum unstable frequency.
8. Describe the electrical and physical properties of transmission lines.
9. Explain the digital transmission and digital ratio.
10. Define multiplexing.
11. What is coherent receiver.
12. Determine the Nyquist sample rate for a maximum analog input of 10kHz.
13. What are the two general categories of error controls. What is the difference between them.
14. What is the purpose of data modem.
15. Describe the topologies commonly used in LANs.
16. What are the seven layers of ISO-OSI model.
17. What is apogee and perigee.
18. What is meant by geostationary satellite.
19. What are the advantages of optical fibre communication.
20. Define numerical aperture.
PART B-(5*12=60)
21. A) explain the operation of super heterodyne receiver. (8)
B) write the advantages and disadvantages of FM. (4)
22. A) Explain the detection of AM signal using envelop detector. (6)
B) with neat diagram explain any one of the FM demodulator. (6)
23. A) Describe ground wave and space wave propagation. (8)
B) Describe the various types of transmission lines. (4)
24. A) How analog signals converted into digital signals in PCM. (8)
B) Explain briefly about TDM. (4)
25. Explain in detail about digital modulation techniques FSK and PSK.
26. A) write note about data communication codes. (8)
B) what is meant by private line services. Explain. (4)
27. A) explain the architecture of ISDN. (6)
B) explain the ISO-OSI seven layer architecture. (6)
28. A) explain the three basic sections of a satellite systems. (8)
B) what are the light sources used in optical communication. Explain. (4)
KEYWORDS:COMMUNICATION ENGINEERING ,2009 TAMIL NADU STATE ANNA UNIVERSITY CHENNAI B.E ELECTRICAL AND ELECTRONICS ENGINEERING COMMUNICATION ENGINEERING QUESTION PAPER,ANNA UNIVERSITY COMMUNICATION ENGINEERING QUESTION PAPER,ANNA UNIVERSITY,ANNA UNIVERSITY CHENNAI,ANNA UNIVERSITY COIMBATORE,ANNA UNIVERSITY TRICHY,ANNA UNIVERSITY TIRUNELVELI,ANNA UNIVERSITY MADURAI,ANNA UNIVERSITY SYLLABUS,ANNA-UNIVERSITY RESULTS,ANNA UNIVERSITY DISTANCE EDUCATION,ANNA UNIVERSITY MBA-CENTRE FOR DISTANCE EDUCATION,ANNA UNIVERSITY SCHEDULE OF EXAMINATIONS,ANNA UNIVERSITY ADMISSION,ANNA UNIVERSITY COURSES,ANNA UNIVERSITY ACADEMIC,ANNA UNIVERSITY DEPARTMENTS,ANNA UNIVERSITY RESEARCH,ANNA UNIVERSITY MAIL,ANNA UNIVERSITY QUESTION PAPERS,ANNA UNIVERSITY COUNSELLING DATES,ANNA UNIVERSITY RE-EVALUATION RESULTS
B.E.\B.TECH.DEGREE-EXAMINATION-DECEMBER 2009
FIFTH SEMESTER-ELECTRICAL&ELECTRONIC ENGG.
COMMUNICATION ENGINEERING
PART A-(2*20=40)
1. Why modulation is necessary in electronic communication systems.
2. Define modulation index and relate it with depth of modulation.
3. For an AM-DSBFC modulator with a carrier frequency fc=100kHz and a maximum modulating signal frequency fm=5kHz draw the output frequency spectrum.
4. What is frequency modulation.
5. List the five types of transmission line losses.
6. Determine SWR of a transmission line with incident voltage Ec=5v and reflected voltage Er=3v.
7. Define critical frequency and maximum unstable frequency.
8. Describe the electrical and physical properties of transmission lines.
9. Explain the digital transmission and digital ratio.
10. Define multiplexing.
11. What is coherent receiver.
12. Determine the Nyquist sample rate for a maximum analog input of 10kHz.
13. What are the two general categories of error controls. What is the difference between them.
14. What is the purpose of data modem.
15. Describe the topologies commonly used in LANs.
16. What are the seven layers of ISO-OSI model.
17. What is apogee and perigee.
18. What is meant by geostationary satellite.
19. What are the advantages of optical fibre communication.
20. Define numerical aperture.
PART B-(5*12=60)
21. A) explain the operation of super heterodyne receiver. (8)
B) write the advantages and disadvantages of FM. (4)
22. A) Explain the detection of AM signal using envelop detector. (6)
B) with neat diagram explain any one of the FM demodulator. (6)
23. A) Describe ground wave and space wave propagation. (8)
B) Describe the various types of transmission lines. (4)
24. A) How analog signals converted into digital signals in PCM. (8)
B) Explain briefly about TDM. (4)
25. Explain in detail about digital modulation techniques FSK and PSK.
26. A) write note about data communication codes. (8)
B) what is meant by private line services. Explain. (4)
27. A) explain the architecture of ISDN. (6)
B) explain the ISO-OSI seven layer architecture. (6)
28. A) explain the three basic sections of a satellite systems. (8)
B) what are the light sources used in optical communication. Explain. (4)
KEYWORDS:COMMUNICATION ENGINEERING ,2009 TAMIL NADU STATE ANNA UNIVERSITY CHENNAI B.E ELECTRICAL AND ELECTRONICS ENGINEERING COMMUNICATION ENGINEERING QUESTION PAPER,ANNA UNIVERSITY COMMUNICATION ENGINEERING QUESTION PAPER,ANNA UNIVERSITY,ANNA UNIVERSITY CHENNAI,ANNA UNIVERSITY COIMBATORE,ANNA UNIVERSITY TRICHY,ANNA UNIVERSITY TIRUNELVELI,ANNA UNIVERSITY MADURAI,ANNA UNIVERSITY SYLLABUS,ANNA-UNIVERSITY RESULTS,ANNA UNIVERSITY DISTANCE EDUCATION,ANNA UNIVERSITY MBA-CENTRE FOR DISTANCE EDUCATION,ANNA UNIVERSITY SCHEDULE OF EXAMINATIONS,ANNA UNIVERSITY ADMISSION,ANNA UNIVERSITY COURSES,ANNA UNIVERSITY ACADEMIC,ANNA UNIVERSITY DEPARTMENTS,ANNA UNIVERSITY RESEARCH,ANNA UNIVERSITY MAIL,ANNA UNIVERSITY QUESTION PAPERS,ANNA UNIVERSITY COUNSELLING DATES,ANNA UNIVERSITY RE-EVALUATION RESULTS