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Circuit Theorems in AC Analysis problems

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

    Electrical Engineering Circuit Theorems in AC Analysis: Referring to the given circuit, what is VTH if VS = 12?0°

  • Options
  • A. 4.69∠38.7° V
  • B. 9.38∠38.7° V
  • C. 12∠0° V
  • D. 6∠0° V
    • Discuss
  • 2. Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determined frequency if VS = 4.5 VRMS?

    Electrical Engineering Circuit Theorems in AC Analysis: Referring to the given circuit, how much power, in watts, is delivered to the speaker at the determi

  • Options
  • A. 226 mW
  • B. 2.26 mW
  • C. 4.24 mW
  • D. 424 mW
    • 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, find ZTH for the part of the circuit that is external to RL.

    Electrical Engineering Circuit Theorems in AC Analysis: Referring to the given circuit, find ZTH for the part of the circuit that is exter

  • 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
  • 5. Determine VTH for the circuit external to RL in the given figure.

    Electrical Engineering Circuit Theorems in AC Analysis: 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
  • 6. Referring to the given figure, determine ZTH as seen by RL if R1 is changed to 3.3 kΩ.

    Electrical Engineering Circuit Theorems in AC Analysis: Referring to the given figure, determine ZTH as seen by RL if

  • Options
  • A. 1488∠?70.7° Ω
  • B. 3859 ∠?31.2° Ω
  • C. 5180 ∠?50.5° Ω
  • D. 1828∠?50.2° Ω
    • Discuss
  • 7. Determine the frequency at which the maximum power is transferred from the amplifier to the speaker in the given figure.

    Electrical Engineering Circuit Theorems in AC Analysis: 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
    • Discuss
  • 8. Determine VTH if R1 is changed to 3.3 kΩ.

    Electrical Engineering Circuit Theorems in AC Analysis: Determine VTH if R1 is changed to 3.3 k?.

  • 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
  • 9. 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
  • 10. 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

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