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  • Question

  • An ideal amplifier should have:


  • Options
  • A. high input current
  • B. zero offset
  • C. high output impedance
  • D. moderate gain

  • Correct Answer
  • zero offset 

    • Operational Amplifiers problems

    Search Results

    • 1. With negative feedback, the returning signal:

    • Options
    • A. aids the input signal
    • B. is proportional to output current
    • C. opposes the input signal
    • D. is proportional to differential voltage gain
      • Discuss
    • 2. An ideal operational amplifier has

    • Options
    • A. infinite output impedance
    • B. zero input impedance
    • C. infinite bandwidth
    • D. All of the above
      • Discuss
    • 3. The Schmitt trigger is a two-state device that is used for:

    • Options
    • A. pulse shaping
    • B. peak detection
    • C. input noise rejection
    • D. filtering
      • Discuss
    • 4. A noninverting closed-loop op-amp circuit generally has a gain factor:

    • Options
    • A. less than one
    • B. greater than one
    • C. of zero
    • D. equal to one
      • Discuss
    • 5. What three subcircuits does a phase locked loop (PLL) consist of?

    • Options
    • A. phase comparator, comparator, and VCO
    • B. phase comparator, bandpass filter, and VCO
    • C. phase comparator, bandpass filter, and demodulator
    • D. phase comparator, low-pass filter, and VCO
      • Discuss
    • 6. A series dissipative regulator is an example of a:

    • Options
    • A. linear regulator
    • B. switching regulator
    • C. shunt regulator
    • D. dc-to-dc converter
      • Discuss
    • 7. All of the following are basic op-amp input modes of operation EXCEPT

    • Options
    • A. inverting mode
    • B. common-mode
    • C. double-ended
    • D. single-ended
      • Discuss
    • 8. 

      What value of input resistance is needed in the given circuit to produce the given output voltage?


    • Options
    • A. 50 Ω
    • B. 4 kΩ
    • C. 4.08 kΩ
    • D. 5 kΩ
      • Discuss
    • 9. How many logic states does an S-R flip-flop have?

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 5
      • Discuss
    • 10. Op-amps used as high- and low-pass filter circuits employ which configuration?

    • Options
    • A. noninverting
    • B. comparator
    • C. open-loop
    • D. inverting
      • Discuss

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