JEE Main & Advanced Physics Communication System / संचार तंत्र Question Bank Self Evaluation Test - Communication System

  • question_answer
    An audio frequency of \[10\text{ }kHz\] is transmitted by SSB after AM with carrier waves of frequency\[1\,MHz\]. The frequency of current in output load is

    A) \[1010\,kHz\] or \[990\,kHz\]

    B)   \[1010\,MHz\] or \[1010\,MHz\]

    C)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      \[110\text{ }kHz\] or \[990\text{ }kHz\]

    D) \[110\text{ }MHz\] or \[990\text{ }MHz\]

    Correct Answer: A

    Solution :

    [a] SSB transmission to signal are possible at load \[{{\omega }_{c}}+{{\omega }_{m}}\]  or  \[{{\omega }_{c}}-{{\omega }_{m}}\] \[\Rightarrow \,\,\,\,\,(1000+10)kHz\] or  \[(100-10)\,kHz.\] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,1010\,kHz\] or  \[990\,kHz\]


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