EC8491 CT Question Papers
Anna University Regulation 2017 ECE EC8491 CT Question Papers for previous years are provided below. Previous Year Question Papers for ECE 4th SEM EC8491 Communication Theory, Engineering are listed down for students to make perfect utilization and score maximum marks with our study materials.
Anna University Regulation 2017 (ECE) 4th SEM EC8491 CT – Communication Theory question paper
1. What is pre envelope and complex envelope?
2. Give the advantages of VSB-AM.
3. State heterodyning principle.
4.Mention the advantages of modulating low frequency signal into high frequency signal.
5. List the types of AM modulators.
6. Define Coherent Detection.
7. Why do you need modulation in communication systems?
8.Identify the differences between single sideband and vestigial sideband systems.
9. Write about diagonal clipping and negative peak clipping?
10.Suggest a modulation scheme for broadcast video transmission.
11.Apply the concepts of sensitivity and selectivity in AM receiver.
12.Draw the AM modulated wave for over, under & 100% modulation.
13.If incoming frequency is f1 and translated carrier frequency is f2, apply and find the local oscillator frequency.
14. Compare AM with DSB-SC and SSB-SC.
15. Distinguish between high level and low level modulation?
16. Differentiate between linear and non-linear modulation
17.A carrier of 20MHz is amplitude modulated with a signal frequency of 3KHz and amplitude 5Volts. If modulation index is 0.5, determine the spectra of the waveform.
18.If a 10KW amplitude modulated transmitter is modulated sinusoidally by 50%, evaluate the total RF power delivered.
19. Summarize the methods for generating SSB-SC signal. BTL 2 Understanding
20.Can you formulate the theory for modulation index of an AM signal and write its classification.
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