Determine the equivalent impedance Zeq in standard form as defined in Figure P6.81(a). Choose the Bode plot from Figure P6.81(b) that best describes the behavior of the impedance as a function of frequency. Describe how to find the resonant and cutoff frequencies, and the magnitude of the impedance for those ranges where it is constant. Label the Bode plot to indicate which feature you are discussing.
1. At the resonant frequency, the impedance is real, i.e., the reactive part is zero.
2. The magnitude of the impedance at the resonant frequency is Zo evaluated at the resonant frequency.
3. There are three cutoff frequencies [the 3 dB] frequencies evaluated by making the functions of frequency equal to +1 or - 1.
4. The magnitude of the impedance when the frequency is low can be determined in two ways. First, the circuit can be modeled at low frequencies by replacing the inductor with a short circuit and the capacitor with an open circuit. Under these conditions the impedance is equal to that of the resistor. Or the limit of the impedance as the frequency approaches zero can be determined.
You might also like to view...
Contractionary fiscal policy actions
A) Would decrease farmers' fixed liabilities. B) Would increase farmers' operating expenses. C) Would increase farmers' total assets. D) None of the above.
Technician A says when the planet carrier is the driving member of the gear set and the sun gear is held, overdrive occurs. Technician B says if any two of the planetary gear set members receive torque in the same direction at the same speed, the third member is forced to turn with the other two and direct drive is the result. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
_______________ energy is useful for heating greenhouses, aquaculture facilities, and farm buildings
Fill in the blank(s) with the appropriate word(s).Which of the following is not a method used to produce electricity?
A. magnetism B. pressure C. heat D. absorption