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AIIMS AIIMS Solved Paper-2007

  • question_answer
    In a detector, output circuit consists of R = 10\[{{L}_{A}}\] and C = 100\[{{L}_{B}}\]. The frequency of carrier signal it can detect is

    A)  >>1MHz             

    B)        0.1 kHz

    C)        >>1GHz              

    D)        \[{{10}^{3}}\,Hz\]

    Correct Answer: A

    Solution :

    Here \[\overset{0}{\mathop{A}}\,\] \[R=\alpha \] Time constant of the circuit \[\alpha \] For demodulation, \[\mu k\] or    \[\mu k\] or   \[\mu k\] Therefore, frequency of carrier signal must be much greater than 1 MHz.


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