## EC8395 CE 2marks

Anna University Regulation 2017 EC8395 CE 2marks & 16marks for all 5 units are provided below. EC8395 CE Short answers, Question Bank for Communication Engineering Engineering are listed down for students to make perfect utilization and score maximum marks with our study materials.

EC8395 COMMUNICATION ENGINEERING ENGINEERING QUESTION BANK

UNIT-I 2-marks

1 Define Modulation.

2 List out the reasons/need for using modulation.

3 Define amplitude Modulation.

4 Define Modulation index and percent modulation for an AM wave.

5 Draw the voltage spectrum of AM wave when one modulating signal is involved.

6 Define Single sideband suppressed carrier AM.

7 What are the advantages of DSB transmission?

8 Mention the use of Envelope Detector.

9 Compare AM and FM.

10 Let Vm(t)=sin(2𝜋X2000t) be the information signal and Vc(t)=5sin(2𝝅X10 6t) be the carrier signal. Calculate Modulation Index.

11 Define angle modulation.

12 Compare NBFM and WBFM.

13 State Carson’s rule for Bandwidth of FM wave..

14 Define instantaneous frequency deviation.

15 Draw the spectrum of AM signal.

16 State Bessel’s formula.

17 Define Deviation Ratio (DR)forAngle modulation.

18 Define percent modulation for FM.

19 In an amplitude modulation system, the carrier frequency is fc = 100 kHz. If the maximum frequency of the signal is 5 kHz, determine the lower and upper side bands and the bandwidth of AM signal.

20 Define modulation index for FM and PM.

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EC8395 CE 2marks

Anna University 3rd SEM CE 2marks 16 marks