COMMUNICATION ENGINEERING-II ECE- 5TH SEMESTER
Very Short Answer Type Question (2 Marks Each, about 30- 40 words)
1. Define Microwave.
2. What are the application of Microwaves?
3. Write the frequency range of VHF,UHF,HF,SHF.
4. What are the high frequency effects in conventional tubes.
5. What is the effect of transit time?
6. What are the microwave sources?
7. Define electron emission.
8. Define reflex klystron.
9. Define TWT.
10. Define Waveguide.
11. What are group velocity and phase velocity?
12. Define TEM mode.
13. Define Guided Wavelength.
14. List two microwave devices using faraday rotation principles.
15. What is Hybrid TEE?
16. Define isolator.
17. Define waveguide attenuators.
18. Give the application of direction coupler.
19. What is meant by Polarization?
20. Define antenna.
21. Define directive gain.
22. Define Tropospheric waves.
23. What is meant by fading?
24. What is ionospheric propagation?
25. What is the concept of reflection & refraction waves by the ionosphere.
26. Define MUF(maximum usable frequency).
27. Define ground/surface waves.
28. What is radar?
29. What do you mean by maximum unambiguous range?
30. What are the applications of radar.
31. What are stalo & coho?
32. Define blind speeds.
33. What is clutter?
34. What is MTI radar?
35. What is PPI?
36. What is VSAT?
37. Define apogee & perigee.
38. What is an orbit?
39. What is meant by transponder?
40. Define diplexer.
41. What are the methods of multiple access techniques?
42. Define guard time.
43. what are the Kepler’s Laws of planetary motion?
44. What are the applications of VSAT?
