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

  • question_answer
    A carrier frequency of \[10\,kV\] at \[1\text{ }MHz\] is amplitude modulated by a \[1\text{ }kHz\] signal of \[6\text{ }kV\] peak voltage. When the modulation pattern is observed on a calibrated CRO, the voltage indicated by the CRO will be

    A) \[16\]

    B) \[32\]

    C) \[864\]

    D) \[84\]

    Correct Answer: B

    Solution :

    [b] Voltage observed on CRO of modulated signal (peak to peak) = (carrier voltage + modulating signal voltage) \[\times 2\] \[=\left( 10+6 \right)\times 2=16\times 2=32\,kV\]  


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