Analog Digital Communication (BEE058) - AKTU Question Paper 2024-25
B.Tech · Semester 5 · Free PDF Download
This is the official AKTU Analog Digital Communication Previous Year Question Paper for B.Tech Semester 5, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 5
Session:2024-25
University:AKTU / UPTU
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Questions Asked in 2024-25
Analog Digital Communication (BEE058) — complete question paper · 70 marks · 3 Hours
Section AAttempt all questions in brief. 2 x 07 = 14
- aDefine modulation, Amplitude mod ulation and angle modulation
- bDraw the basic block diagram of analog communication system
- cExplain frequency deviation of FM signal?
- dExplain Nyquist criteria for sampling
- eWhy FSK is preferred over ASK?
- fWhat do you understand by Shannon Hartley Theorem?
- gWhat is Electronic Commutator in TDM System?
Section BAttempt any three of the following: 07 x 3 = 07
- aDifferentiate between Narrowb and FM and wideband FM with the ir frequency spectrum and suitable mathematical expressions
- bExplain coherent method of gen eration and detection of PAM s ignal with suitable mathematical expressions
- cWhat is quantization? How is quantization and coding done? E xplain with suitable diagram
- dGive brief introduction about t ime division multiplexing? Ex plain synchronous and asynchronous TDM
- eDraw the block diagram of B PSK transmitter. Explain balanced r i n g modulator of BPSK
Section CAttempt any one part of the following: 07 x 1 = 07
- aWhy Super heterodyne receiver is better than the TRF receive r? What are the functions of receivers?
- bWith the help of diagram explain generation and detection of S S B - S C wave
- aWhat is noise? Noise is difficult to eliminate but its effec t can be minimizing justify
- bAn FM modulator operates at carrier-signal frequency of 500 KHz having peak amplitude of 10V . A modulating frequency (f m) of 10 KHz modulates it with a peak frequenc y deviation (δ) of 10 KHz. Fro m the Bessel function table, it is observed that a frequency modulation index of one yield three sets of significan t of sidebands. Compare actua l minimum bandwidth as obtained using Bessel function and the approximate minimum bandwidth using Carson’s rule
- aExplain the working of delta modulation. How adaptive Delta modulation improves the performance of Delta modulation
- bExplain the generation and de modulation of pulse width modul ation (PWM)?
- aA Discrete Memory less Source X has five symbols (s 0, s1, s2, s3, s4) and their probabilities of occurrence are given as 0.40, 0.20, 0.20 , 0.10, 0.10, respectively. Construct Huffman Code and calculate efficiency
- bGiving modulated waveforms, single space diagrams and probab ility of errors draw the optimum receiver structures for DPSK and coherent FSK modulation schemes
- aDefine information and entropy. Find an expression for the c hannel capacity of a continuous channel
- bWhat should be the desirable feature of a T1 carrier system? Explain PCM-TDM system
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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