MSc 3rd Semester Electronics Previous Year Question Paper | MSc 3rd Semester electronics Question Paper Pdf 2025
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B010904T
M.Sc. (Third Semester) (NEP)
Examination, 2024-25
PHYSICS
(Electronics – I)
(Elective)
Time: Two Hours Maximum Marks: 75
Note: Attempt questions from all sections as directed.
Inst. The candidates are required to answer only in serial order. If there are many parts of a question, answer them in continuation.
Section – A
(Short Answer Type Questions)
Note: Attempt all questions from this section. Each question carries 5 marks.
1. (a) What is the Pulsed RADAR System?
(b) How is bunching achieved in cavity magnetron?
(c) Define VSWR in brief.
(d) Why is data BUS bidirectional?
(e) How can two memory pointers be formed using the 8085 instructions?
(f) Define fading? Explain the various types of fading.
(g) State the basic characteristics of transmitting antenna.
(h) Explain, what is the difference between critical frequency and maximum usable frequency in the sky wave
propagation?
(i) What are the advantages of optical fibre communication?
MSc 3rd Semester Electronics Question Paper 2025 Pdf
Section-B
(Long Answer Type Questions)
Note: Attempt any one question. Each question carries 15 marks.
2. Discuss how the azimuth and range of a target is measured with the help of PPI?
3. What is the function of an antenna? Explain a half wave dipole antenna. Why is the maximum radiation in a direction at right angle to the antenna?
4. Draw a sample and hold circuit. Explain its operation and indicate its uses.
5. Write short notes on any two of the following:
(a) SNR
(b) Antenna array
(c) Noise Reduction in Electronic Circuits
(d) Transmission line.
Section-C
(Long Answer Type Questions)
Note: Attempt any one question from this section. Each question carries 15 marks.
6. What do you mean by bunching process? What is the difference between reflex klystron and klystron?
7. What are the different forms of propagations? Which types are suitable for microwave propagation?
8. What are the different groups in the instruction of 8085? Also draw the memory read machine cycle of 8085 microprocessor showing various status and control signals.
9. Mention how a TWT can be converted to an Oscillator? Explain the operation of such a device.
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