Electrical 4th sem CCN important questions diploma

1. Define modulation is different types of modulation. 
2. Explain ground wave propagation with neat sketch.
3.  Draw the diagram showing the basic elements of fibre optic communication system.
4.  List the problem faced by conventional conductor components in microwave frequency Android merits to recover them sister application of satellite communication. 
5. Define the following channel bandwidth band width bit rate. 
6. List the functions of the following router repeater and gateway in computer networks.
7.  Differentiate Half duplex and full duplex communication. 
8. Electromagnetic spectrum and mark the major segments. 
9. Define TDM and FDM. 
10. Illustrate the amplitude modulation with circuit diagram and waveform.
11.  Explain the working of superheterodyne receiver with neat block diagram. 
12. Explain the expression for characteristics impedance of coaxial cable. 
13. With diagram working of optical transmitter with a diagram. 
14. List the advantages and disadvantages of optic fibre cable. 
15. Explain the concept of GPS. Compare 2G with 3G GSM system. Compare synchronous and asynchronous mode of data transmission. 
16. Explain the working of fsk modem with diagram. 
17. Explain TCP / IP model with diagram. Explain the concept of Star network topology and network topology with diagram. 
18. Explain working of wireless access point with diagram. 
19. Explain the working of satellite Earth station with block diagram. 
20. Explain with diagram working of two cavity klystron amplifier. 
21. Explain the concept of amplitude modulation. 
22. Explain the working of mobile station. 
23. Explain with neat sketch the propagation of sky wave space wave and ground wave propagation. 
24. Explain geosynchronous Orbit. 
25. explain the working of am detector circuit with diagram. 
26. state the function of router and repeater. 
27. Explain the following LAN man and Wan.