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Questions  

For a television network , 5×105 channels are granted. If the central frequency of the microwave link is 25 GHZ and the allotted band width for each channel is 2 KHZ, how much percentage of link is used for the network?

a
4 %
b
10 %
c
25 %
d
5 %

detailed solution

Correct option is A

Allotted bandwidth for each channel = 2 KHz = 2000 Hz  No of Channels  = 5×105  Bandwidth for all channels = 2000 × 5×105 = 109 Hz    Frequency of microwave link = 25 GHz = =25×109Hz Percentage of link used  = 10925×109=125=0.04 i.e 4%

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