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Home ‣ Electrical Engineering ‣ Circuit Theorems in AC Analysis See What Others Are Saying!
  • Question

  • For the circuit shown, determine ZTH for the portion of the circuit external to RL.

    For the circuit shown, determine ZTH for the portion of the circuit external to RL. 66.7 ??33.7° k?


  • Options
  • A. 66.7 ∠?33.7° kΩ
  • B. 6.67∠?333.7° kΩ
  • C. 14.4 ∠?56.3° kΩ
  • D. 1.44 ∠?33.7° kΩ

  • Correct Answer
  • 6.67∠?333.7° kΩ 

    • More questions

    • 1. When one of three series resistors is removed from a circuit and the circuit is reconnected, the current

    • Options
    • A. increases
    • B. increases by one-third
    • C. decreases by one-third
    • D. decreases by the amount of current through the removed resistor
      • Discuss
    • 2. Find the Norton circuit, that is, IIN and RN, for the circuit given below.


    • Options
    • A. 478 mA, 12.8 Ω
    • B. 750 mA, 12.8 Ω
    • C. 478 mA, 6.8 Ω
    • D. 750 mA, 6.8 Ω
      • Discuss
    • 3. If in a Y-connected ac generator, each phase voltage has a magnitude of 90 VRMS, what is the magnitude of each line voltage?

    • Options
    • A. 0 V
    • B. 90 V
    • C. 156 V
    • D. 180 V
      • Discuss
    • 4. Addition of resistors in parallel increases total resistance and decreases total current.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Determine IN for the circuit consisting of VS, R1, R2, and R3 shown in the given circuit.


    • Options
    • A. 676 mA
    • B. 245 mA
    • C. 431 mA
    • D. 75 mA
      • Discuss
    • 6. Referring to the given circuit, determine VTH and RTH if a 68 Ω resistor is connected in parallel across R2 and R3.


    • Options
    • A. 3.3 V, 148 Ω
    • B. 330 mV, 148 Ω
    • C. 3.3 V, 68 Ω
    • D. 330 mV, 68 Ω
      • Discuss
    • 7. What is (79 × 106)/(12 × 10?8)?

    • Options
    • A. 6,580 × 1012
    • B. 658 × 1010
    • C. 6.58 × 1014
    • D. 0.658 × 1016
      • Discuss
    • 8. What is the voltage drop across R1?


    • Options
    • A. 850 mV
    • B. 7.82 V
    • C. 9.18 V
    • D. 918 mV
      • Discuss
    • 9. Find the current through R2 of the given circuit.


    • Options
    • A. 30.7 mA
    • B. 104 mA
    • C. 74 mA
    • D. 134 mA
      • Discuss
    • 10. With an RL integrator, at the instant of the rising pulse edge,

    • Options
    • A. all the input voltage is across the resistor
    • B. all the input voltage is across the inductor
    • C. 63 percent of the input voltage is across the resistor
    • D. 63 percent of the input voltage is across the inductor
      • Discuss

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