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Home ‣ Electronics ‣ Operational Amplifiers Comments
  • Question

  • A 555 timer can be configured as an astable multivibrator.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Operational Amplifiers problems

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    • 1. This circuit is a differentiator.


    • Options
    • A. True
    • B. False
      • Discuss
    • 2. An op-amp has very low open-loop gain.

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

    • Options
    • A. True
    • B. False
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    • 4. 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
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    • 5. The feedback resistor adds to the gain of an op-amp.

    • Options
    • A. True
    • B. False
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    • 6. Operational amplifiers (op-amps) use internal capacitive coupling between stages.

    • Options
    • A. True
    • B. False
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    • 7. The TO-5 operational amplifier package can have 5 pins.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. This circuit is operating in a closed-loop mode.


    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The voltage-follower amplifier circuit has a fixed voltage gain of approximately 10.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. If the frequency of an astable multivibrator is 54.86 kHz then its period is 1.82 s.

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

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