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  • Question

  • Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.

    Determine the frequency at which the maximum power is transferred from the amplifier to the speaker


  • Options
  • A. 1,027 Hz
  • B. 10,270 Hz
  • C. 6,330 Hz
  • D. 63,330 Hz

  • Correct Answer
  • 1,027 Hz 

    • Circuit Theorems in AC Analysis problems

    Search Results

    • 1. Referring to the given figure, determine ZTH as seen by RL if R1 is changed to 3.3 kΩ.


    • Options
    • A. 1488∠?70.7° Ω
    • B. 3859 ∠?31.2° Ω
    • C. 5180 ∠?50.5° Ω
    • D. 1828∠?50.2° Ω
      • Discuss
    • 2. Determine VTH for the circuit external to RL in the given figure.


    • Options
    • A. 135∠63.4° V
    • B. 13.5∠63.4° V
    • C. 13.5∠0° V
    • D. 135∠0° V
      • Discuss
    • 3. Referring to the given circuit, find ZTH for the part of the circuit that is external to RL.


    • Options
    • A. 129∠21.4° Ω
    • B. 43.7∠68.6° Ω
    • C. 43.7∠21.4° Ω
    • D. 12.9∠68.6° Ω
      • Discuss
    • 4. The Thevenin equivalent voltage is

    • Options
    • A. equal to the source voltage
    • B. the same as the load voltage
    • C. the open circuit voltage
    • D. none of the above
      • Discuss
    • 5. Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?


    • Options
    • A. 226 mW
    • B. 2.26 mW
    • C. 4.24 mW
    • D. 424 mW
      • Discuss
    • 6. Determine VTH if R1 is changed to 3.3 kΩ.


    • Options
    • A. 0.574∠16.7° V
    • B. 4.63∠16.7° V
    • C. 4.63∠39.5° V
    • D. 0.463∠39.5° V
      • Discuss
    • 7. Norton's theorem gives

    • Options
    • A. an equivalent current source in parallel with an equivalent impedance
    • B. an equivalent current source in series with an equivalent impedance
    • C. an equivalent voltage source in parallel with an equivalent impedance
    • D. an equivalent voltage source in series with an equivalent impedance
      • Discuss
    • 8. If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant

    • Options
    • A. is zero
    • B. is the sum of the two currents
    • C. is the difference between the two currents
    • D. cannot be determined
      • Discuss
    • 9. Referring to the given circuit, find ZTH if R is 15 kΩ and RL is 38 kΩ.


    • Options
    • A. 89.82 ∠?51.3° kΩ
    • B. 19.2 ∠?38.3° kΩ
    • C. 9.38∠?51.3° kΩ
    • D. 180 ∠?38.3° kΩ
      • Discuss
    • 10. In order to get maximum power transfer from a capacitive source, the load must

    • Options
    • A. have a capacitive reactance equal to circuit resistance
    • B. have an impedance that is the complex conjugate of the source impedance
    • C. be as capacitive as it is inductive
    • D. none of the above
      • Discuss

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