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  • Question

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

    Referring to the given figure, determine ZTH as seen by RL if R1 is changed to 3.3 k?. 1488??70.7° ?


  • Options
  • A. 1488∠?70.7° Ω
  • B. 3859 ∠?31.2° Ω
  • C. 5180 ∠?50.5° Ω
  • D. 1828∠?50.2° Ω

  • Correct Answer
  • 1828∠?50.2° Ω 

    • Circuit Theorems in AC Analysis problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. Referring to the given circuit, what is VTH if VS = 12∠0° V?


    • Options
    • A. 4.69∠38.7° V
    • B. 9.38∠38.7° V
    • C. 12∠0° V
    • D. 6∠0° V
      • Discuss
    • 6. Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.


    • Options
    • A. 1,027 Hz
    • B. 10,270 Hz
    • C. 6,330 Hz
    • D. 63,330 Hz
      • Discuss
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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

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