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Basic Op-Amp Circuits problems

  • 1. For a Wien-bridge oscillator to produce a sustained sine-wave output, the phase shift around the positive feedback loop must be greater than 0°.

  • Options
  • A. True
  • B. False
    • Discuss
  • 2. A two-pole active filter produces a roll-off rate of ?20 dB/decade.

  • Options
  • A. True
  • B. False
    • Discuss
  • 3. The control element in a basic shunt voltage regulator is a zener diode.

  • Options
  • A. True
  • B. False
    • Discuss
  • 4. A Wien-bridge oscillator uses _________.

  • Options
  • A. positive feedback
  • B. negative feedback
  • C. both types of feedback
  • D. an LC tank circuit
    • Discuss
  • 5. In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the Acl _______.

  • Options
  • A. reduced, equals one
  • B. reduced, is less than one
  • C. increased, is more than one
  • D. increased, is much greater than one
    • Discuss
  • 6. Electronics Basic Op-Amp Circuits: The reference v

    The reference voltage for the comparator in the given circuit equals ______.


  • Options
  • A. 0 V
  • B. +8.8 V
  • C. +16 V
  • D. +7.2 V
    • Discuss
  • 7. Electronics Basic Op-Amp Circuits: In the given ci

    In the given circuit, VIN1 equals ______.


  • Options
  • A. +4 V
  • B. +20 V
  • C. ?4 V
  • D. ?20 V
    • Discuss
  • 8. The ______________ input makes the summing amplifier circuit possible.

  • Options
  • A. virtual ground at the noninverting
  • B. virtual ground at the inverting
  • C. low-voltage
  • D. high-voltage
    • Discuss
  • 9. A mathematical operation that determines the rate of change of a curve is called __________.

  • Options
  • A. differentiation
  • B. integration
  • C. curve averaging
  • D. linear regression
    • Discuss
  • 10. A mathematical operation for finding the area under the curve of a graph is called __________.

  • Options
  • A. differentiation
  • B. integration
  • C. curve averaging
  • D. linear regression
    • Discuss

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