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  • Question

  • What is the output waveform?

    What is the output waveform? sine wave square wave sawtooth wave triangle wave


  • Options
  • A. sine wave
  • B. square wave
  • C. sawtooth wave
  • D. triangle wave

  • Correct Answer
  • triangle wave 

    • Operational Amplifiers problems

    Search Results

    • 1. A circuit that uses an amplifier with passive filter elements is called a(n):

    • Options
    • A. relaxation oscillator
    • B. signal generator
    • C. differential amplifier
    • D. active filter
      • Discuss
    • 2. How many leads does the TO-5 metal can package of an operational amplifier have?

    • Options
    • A. 8, 10, or 12
    • B. 6, 8, or 10
    • C. 8 or 14
    • D. 8 or 16
      • Discuss
    • 3. What is the cutoff frequency of this low-pass filter?


    • Options
    • A. 4.8 kHz
    • B. 3.8 kHz
    • C. 2.8 kHz
    • D. 1.8 kHz
      • Discuss
    • 4. With a differential gain of 50,000 and a common-mode gain of 2, what is the common-mode rejection ratio?

    • Options
    • A. ?87.9 dB
    • B. ?43.9 dB
    • C. 43.9 dB
    • D. 87.9 dB
      • Discuss
    • 5. The closed-loop voltage gain of an inverting amplifier equals:

    • Options
    • A. the ratio of the input resistance to the feedback resistance
    • B. the open-loop voltage gain
    • C. the feedback resistance divided by the input resistance
    • D. the input resistance
      • Discuss
    • 6. Input impedance [Zin(I)] of an inverting amplifier is approximately equal to:

    • Options
    • A. Ri
    • B. Rf + Ri
    • C. ?
    • D. Rf ? Ri
      • Discuss
    • 7. What is the output voltage?


    • Options
    • A. 15 V
    • B. 5 V
    • C. ?5 V
    • D. ?15 V
      • Discuss
    • 8. If ground is applied to the (+) terminal of an inverting op-amp, the (?) terminal will:

    • Options
    • A. not need an input resistor
    • B. be virtual ground
    • C. have high reverse current
    • D. not invert the signal
      • Discuss
    • 9. If a noninverting amplifier has an RIN of 1000 ohms and an RFB of 2.5 kilohms, what is the RIN voltage when 1.42 mV is applied to the correct input?

    • Options
    • A. 3.5 mV
    • B. ground
    • C. 1.42 mV
    • D. 0.56 mV
      • Discuss
    • 10. What is the difference between common-mode and differential-mode input signals?

    • Options
    • A. phase relationship
    • B. voltage
    • C. current
    • D. apparent power
      • Discuss

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