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Operational Amplifiers problems

  • 1. The inverting input is pin 2.

    Electronics Operational Amplifiers: The inverting input is pin 2.

  • Options
  • A. True
  • B. False
    • Discuss
  • 2. A voltage-follower op-amp has the output connected directly to the inverting input.

  • Options
  • A. True
  • B. False
    • Discuss
  • 3. This circuit is a bandpass filter.

    Electronics Operational Amplifiers: This circuit is a bandpass filter.

  • Options
  • A. True
  • B. False
    • Discuss
  • 4. Electronics Operational Amplifiers: The voltage gai

    The voltage gain of the amplifier in the given circuit would increase if ______.


  • Options
  • A. the feedback resistor was decreased in value
  • B. the input voltage was increased
  • C. the input resistor was increased in value
  • D. None of the above
    • Discuss
  • 5. The common-mode rejection ratio (CMMR) is the ratio of _____ to ______.

  • Options
  • A. the differential voltage gain, the common-mode voltage gain
  • B. the differential power gain, the common-mode power gain
  • C. the ideal voltage gain, the actual voltage gain
  • D. signal voltage, noise voltage
    • Discuss
  • 6. Electronics Operational Amplifiers: The input voltag

    The input voltage must be ______ in the given circuit to obtain the given output voltage.


  • Options
  • A. 343 mV
  • B. 400 mV
  • C. 480 mV
  • D. 600 mV
    • Discuss
  • 7. The Q of a crystal _________.

  • Options
  • A. is extremely low
  • B. is about 40 or so in most cases
  • C. is extremely high
  • D. none of the above
    • Discuss
  • 8. ______ is NOT a characteristic of an ideal op-amp.

  • Options
  • A. Infinite voltage gain
  • B. Minimum bandwidth
  • C. Infinite input impedance
  • D. Zero output impedance
    • Discuss
  • 9. Common-mode signals have _____.

  • Options
  • A. the same amplitude
  • B. the same phase
  • C. the same frequency
  • D. All of the above
    • Discuss
  • 10. Current cannot flow to ground through a(n) ________.

  • Options
  • A. mechanical ground
  • B. ac ground
  • C. virtual ground
  • D. virtual short
    • Discuss

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