Download PTU B.Tech 2021 Jan ECE 5th Sem 78757 Analog And Digital Communication Question Paper

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Total No. of Pages : 02
Total No. of Questions : 18

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B.Tech. (ECE) (Sem.=5)

ANALOG AND DIGITAL COMMUNICATION
Subject Code : UC-BTEC-501-18
M.Code : 78757
Time : 3 Hrs. Max. Marks : 60

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INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

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Write briefly :

1. Differentiate between analog and digital signals.
2. What is the significance of carrier in modulation?
3. Draw the frequency spectrum of DSB-SC signal.
4. Enlist various types of noise in communication channel.

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5. What do you mean by Unit impulse function?
6. Differentiate between EDM and TDM.
7. Explain aperture effect.
8. Define slope overload distortion in delta modulation.
9. What are the digital modulation formats?

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10. What are the advantages of MSK?

SECTION-B

11. Derive the expression for AM wave.
12. Explain the sampling process and its various steps in detail.
13. Explain Adaptive Delta Modulation in detail.

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14. Describe the noise in frequency modulation.
15. Draw and describe continuous phase modulation.

SECTION-C

16. Explain the generation and detection of VSB wave.
17. Draw and explain working of adaptive delta modulation.

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18. Describe the generation and detection of QPSK.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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