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Home ‣ Electronics ‣ Operational Amplifiers Comments
  • Question

  • Crystal oscillator circuits have a very low Q.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Operational Amplifiers problems

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

    • Options
    • A. True
    • B. False
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    • 2. 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
    • 3. 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
    • 4. An inverting amplifier has a phase shift of 180° from input to output.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. 

      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
    • 6. Feedback is used in an open-loop operational amplifier circuit.

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

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. 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
    • 10. In a common-mode input to an op-amp, both inputs are connected to the same signal source.

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

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