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  • Question

  • The reflected resistance is ___ as seen by the source in the given circu. 150 ? 300 ? 600 ? 2.4 k?

    The reflected resistance is ___ as seen by the source in the given circu.


  • Options
  • A. 150 Ω
  • B. 300 Ω
  • C. 600 Ω
  • D. 2.4 kΩ

  • Correct Answer
  • 2.4 kΩ 

    • More questions

    • 1. 

      What is the current through XC1 in the given circuit?


    • Options
    • A. 32.2 mA
    • B. 16 mA
    • C. 12 mA
    • D. 48 mA
      • Discuss
    • 2. The total power is 10 watts.


    • Options
    • A. True
    • B. False
      • Discuss
    • 3. 

      The peak inverse voltage (PIV) for the diode in the give circuit equals ___.


    • Options
    • A. 3 V
    • B. 2.3 V
    • C. 0 V
    • D. 6 V
      • Discuss
    • 4. If one branch shorts out in a parallel circuit, the other branches are not affected.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. What is the waveform period of a square wave signal that horizontally covers 3 major divisions per cycle? (time/cm = 50 ms)

    • Options
    • A. 50 ms
    • B. 100 ms
    • C. 150 ms
    • D. 200 ms
      • Discuss
    • 6. If an op-amp has one input grounded and the other input has a signal feed to it, then it is operating as what?

    • Options
    • A. Common-mode
    • B. Single-ended
    • C. Double-ended
    • D. Noninverting mode
      • Discuss
    • 7. A binary number's value changes most drastically when the ____ is changed.

    • Options
    • A. LSB
    • B. duty cycle
    • C. MSB
    • D. frequency
      • Discuss
    • 8. An S-R flip-flop can be triggered by ______, ______, or ________.

    • Options
    • A. HIGHs, LOWs, PRESETs
    • B. edges, levels, pulses
    • C. HIGHs, LOWs, CLEARs
    • D. SETs, RESETs, HIGHs
      • Discuss
    • 9. A single-phase induction motor

    • Options
    • A. is self-starting
    • B. operates at a fixed speed
    • C. is less reliable than a three-phase synchronous motor
    • D. none of the above
      • Discuss
    • 10. Series resonance happens when _____.

    • Options
    • A. XC = XC
    • B. XL = XC
    • C. XL = XB
    • D. XT = R
      • Discuss

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