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Home ‣ Electronics ‣ Operational Amplifiers Comments
  • Question

  • The ideal output impedance for an operational amplifier is 0 Ω.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Operational Amplifiers problems

    Search Results

    • 1. If the two inputs to a differential amplifier are exactly the same, then the output is the signal multiplied by 2.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. If an input signal is applied to the inverting input of an op-amp with the noninverting input grounded, the output signal would be opposite in polarity to the input.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. An inverting amplifier has a phase shift of 180° from input to output.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. 

      The output voltage is _____ at the resonant frequency in the given circuit.


    • Options
    • A. 0 mV
    • B. 31.4 mV
    • C. 66.5 mV
    • D. 380 mV
      • Discuss
    • 5. 

      The voltage across the inductor is ______ in the given circuit.


    • Options
    • A. 6.5 V
    • B. 12.4 V
    • C. 14 V
    • D. 50 V
      • Discuss
    • 6. Crystal oscillator circuits have a very low Q.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Feedback is used in an open-loop operational amplifier circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. An astable multivibrator has two states.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The feedback resistor adds to the gain of an op-amp.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. It takes 4 µs for the output voltage of an op-amp to rise from ?14 V to +14 V. The slew rate of this op-amp is 3.5 V/µs.

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

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