**** Question paper of Advance Communication System 2020( Even) With Objective Solution ****
1. Which the following is most widely used streaming video file format.
Ans:- H, 264
2 .What is a pager in the paging system
Ans:- A receiver
3. A Wi-Fi enable device can be ......
Ans:- PC, Mobile
4. Which is thickest layer of Ionoshere?
Ans:- F2
5. Bandwidth of amplitude modulation signal is gives by
Ans:- 2fm , fc+fm -(fc-fm)
6. Armstrong method is used for generation of .
Ans:- Indirect . F.m
7. The mutual information is
Ans:- Symmetric , Always non -negative
8. H (X,Y) =H(Y/X)+ .........
Ans:- H (X)
9. Channel capacity in communication system depends on
Ans:- Bandwidth , S/N ration
10. Man-made noise is usually from ....
Ans:- None of above
11. Noise due to random behavier of charge carrier is ....
Ans:-Shot Noise
12. Noise equivalent temperature of a two stage cascade network is gives by
Ans:- Te1+Te2/G1
13. Power density is define as ...... power per unit area .
Ans:- Radiated
14. Steradian is a measuring unit of .......
Ans:- Solid Angle
15. In Radar system the change in observed frequency is called ...
Ans:- Doppler shift
15. Frequency of KU band for satellite communication is ....
Ans:- 12/14 Ghz
16. INTELSAT stand for ......
Ans:- International telecommunication satellite
18. Multimode step index fibre has a large core diameter of range
Ans:- 100 to 300 μm
19. When the logarithm is 2' , the unit of information is
Ans:- Bits
20. Radar is used to find ........
Ans:- Location , Movement , precipitation