Saturday, July 23, 2016

EC6651 Communication Engineering Question Bank

Anna University, Chennai
Department of Electronics and Communication Engineering
Subject Code: EC6651
Subject Name: Communication Engineering
Question Bank
VEC Edition

1. Define modulation index of FM. (BT-1)
2. A carrier signal with power of 40 watts is amplitude modulated by a sinusoidal signal. Calculate
the power of the modulated signal if the modulation is 0.7. (BT-3)
3. Describe the need for modulation. (BT-2)
4. Explain about image frequency? How it is rejected? (BT-4)
5. Formulate the relationship between phase and frequency modulation. (BT -6)
6. Label the frequency spectrum of AM wave with a neat sketch. (BT-1)
7. Give the characteristics features of spectrum of AM wave. (BT-2)
8. Differentiate amplitude modulation and frequency modulation. (BT-2)
9. List the disadvantages of single side band transmission. (BT-1)
10. Define quantization error. (BT-1)
11. Summarize the advantage of FM over AM. (BT-2)
12. A transmitter radiates 9 KW with the carrier unmodulated and 10.125 KW when carrier is
sinusoidally modulated. Calculate the modulation index. (BT-3)
13. Point out the advantage and disadvantage of FM. (BT-4)
14. Explain about Energy and power signals. (BT-4)
15. An AM transmitter is modulated by three source of audio with m1=0.5,m2=0.7,m3=0.4.The
unmodulated carrier power is 50 kw. Calculate the modulated power output. (BT-3)
16. Define modulation index of FM. (BT-1)
17. Compare NBFM and WBFM. (BT-5)

Attachment (Full question bank in PDF): EC6651 Communication Engineering Question Bank in PDF
Share This
Previous Post
Next Post

B.E Civil Engineer Graduated from Government College of Engineering Tirunelveli in the year 2016. She has developed this website for the welfare of students community not only for students under Anna University Chennai, but for all universities located in India. That's why her website is named as . If you don't find any study materials that you are looking for, you may intimate her through contact page of this website to know her so that it will be useful for providing them as early as possible. You can also share your own study materials and it can be published in this website after verification and reviewing. Thank you!


Pen down your valuable important comments below