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Operational Amplifiers problems

  • 1. The voltage required to force the differential output to zero is called _______.

  • Options
  • A. input-offset current
  • B. input-offset voltage
  • C. input bias current
  • D. slew rate voltage
    • Discuss
  • 2. Electronics Operational Amplifiers: The input impeda

    The input impedance is ______ for the amplifier in the given circuit. The data sheet values are Zin = 3 MΩ, Zout = 80 Ω, and Aol = 250,000.


  • Options
  • A. 4.7 kΩ
  • B. 22.7 kΩ
  • C. 3 MΩ
  • D. 68.6 kΩ
    • Discuss
  • 3. An op-amp circuit in which the output voltage is equal to the difference between the two input voltages is called a(n) _____

  • Options
  • A. integrator
  • B. differentiator
  • C. differential amplifier
  • D. voltage regulator
    • Discuss
  • 4. A virtual ground is a(n) ______ ground because this point is at zero volts.

  • Options
  • A. ordinary
  • B. voltage
  • C. chassis
  • D. earth
    • Discuss
  • 5. Electronics Operational Amplifiers: The voltage gain

    The voltage gain is ______ for the amplifier in the given circuit.


  • Options
  • A. ?4
  • B. ?5
  • C. ?6
  • D. ?7
    • Discuss
  • 6. Electronics Operational Amplifiers: The given circu

    The given circuit is ___.


  • Options
  • A. an inverting amplifier
  • B. a noninverting amplifier
  • C. a voltage follower
  • D. a differential amplifier
    • Discuss
  • 7. The resistors Rf and Ri in an op-amp circuit control ______ .

  • Options
  • A. positive feedback and current gain
  • B. negative feedback and power gain
  • C. negative feedback and voltage gain
  • D. open and closed loop gain
    • Discuss
  • 8. The 555 timer can be connected to operate a(n) ___________.

  • Options
  • A. astable multivibrator
  • B. bistable multivibrator
  • C. monostable multivibrator
  • D. astable multivibrator and a monostable multivibrator
    • Discuss
  • 9. An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ .

  • Options
  • A. PLL
  • B. Schmitt trigger
  • C. VCO
  • D. S-R latch
    • Discuss
  • 10. A ______ is not a multivibrator.

  • Options
  • A. one-shot
  • B. flip-flop
  • C. VCO
  • D. bistable
    • Discuss

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