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  1. A piezo-electric force sensor, connected by a cable to a voltage amplifier, has the following parameters : 
    Crystal properties : Stiffness 109 N/m, Damping ratio 0.01, Natural frequency 105 rad/s, Force-to-Charge sensitivity 10-9 C/N, Capacitance 10-9 F with its loss angle assumed negligible 
    Cable properties : Capacitance 2 × 10-9 F with its resistance assumed negligible 
    Amplifier properties : Input impedance 1 MΩ, Bandwidth 1MHz , Gain 3 
    The minimum frequency of a force signal in Hz within its useful mid-band range of measurement, for which the gain amplitude is more than 0.95, approximately is,
    2. A.
    16
    B.
    160
    C.
    1600
    D.
    16 * 103

    View Answer

    Workspace

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    Answer : Option B

    Explanation :

    -NA-

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