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  • Question

  • This circuit is operating in a closed-loop mode.

    This circuit is operating in a closed-loop mode. True False


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  • A. True
  • B. False

  • Correct Answer
  • False 

    • Operational Amplifiers problems

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    • 1. The TO-5 operational amplifier package can have 5 pins.

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

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    • A. True
    • B. False
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    • 3. A 555 timer can be configured as an astable multivibrator.

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    • A. True
    • B. False
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    • 4. This circuit is a differentiator.


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

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

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

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    • A. True
    • B. False
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    • 8. This circuit is a voltage follower.


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    • A. True
    • B. False
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    • 9. An operational amplifier contains a differential amplifier, a voltage amplifier, and an output amplifier.

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    • A. True
    • B. False
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    • 10. Changing the input voltage to an op-amp circuit will change its voltage gain.

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    • A. True
    • B. False
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