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A telephonic communication service is working at carrier frequency of 10 GHz. Only 10% of it is utilized for transmission. How many telephonic channels can be transmitted simultaneously if each channel requires a bandwidth of 5 kHz ?

  • Option 1)

    2×106
     

  • Option 2)

    2×103
     

  • Option 3)

    2×104
     

  • Option 4)

    2×105

 

Answers (1)

best_answer

Number of channel= \frac{(10GHZ)*0.10}{5*10^{3}}

                               =2*10^{5}

 

Band Width -

The two side band lie on either side of the carrier frequency at equal frequency intravel, fm

- wherein

Band \: W\! idth= \left ( f_{c}\: + f_{m}\right )- \left ( f_{c}\: - f_{m}\right )

                            = 2 f_{m}

 

 


Option 1)

2×106
 

This is incorrect

Option 2)

2×103
 

This is incorrect

Option 3)

2×104
 

This is incorrect

Option 4)

2×105

This is correct

Posted by

Avinash

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