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Operational Amplifiers MCQ Test

  1. What is the main purpose of an operational amplifier?
  2. The tail current of a differential amplifier is ___.
  3. The node voltage at the top of the til resistor is closes to zero.
  4. The tail current in a differential amplifier equals ___.
  5. What is the another name for a unity gain amplifier?
  6. A series dissipative regulator is an example of a ___.
  7. The major difference between ground and virtual ground is:
  8. OPAMP is a/an:
  9. Is Bandwidth of an ideal op-amp infinite?
  10. CMRR stands for which of the following?
  11. What is operational amplifier?
  12. Differential amplifiers are used in Instrumentation amplifiers.
  13. The output voltage of the op-amp Vout is given by the equation:
  14. The input offset current equals the ___________.
Last Updated: Jul 20, 2020,
Posted in Interview Questions,
20 Questions
Operational Amplifiers MCQ

Take Operational Amplifiers MCQ Test & Online Quiz to test your Knowledge

Below is the Operational Amplifiers MCQ test that checks your basic knowledge of Operational Amplifiers. This Operational Amplifiers MCQ Test contains 20 Multiple Choice Questions. You have to select the right answer to the question. Finally, you can also take the Online Quiz from the Take Operational Amplifiers Quiz Button.

  • The basic role of an operational amplifier is to amplify and output the voltage difference between the two input pins.
  • The basic role of an operational amplifier is to input the voltage difference between the two input pins.
  • Both A and B
  • None of the above
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  • half of either collector current
  • equal to either collector current
  • two times either collector current
  • equal to the difference in base currents
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  • difference between two emitter currents
  • sum of two emitter currents
  • collector current divided by current gain
  • collector voltage divided by collector resistance
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  • Difference amplifier
  • Comparator
  • Single ended
  • Voltage follower
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  • linear regulator
  • switching regulator
  • shunt regulator
  • dc-to-dc converter
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  • Virtual ground is only a voltage reference.
  • Virtual ground is only a current reference
  • Virtual ground is only a power reference
  • None of the above
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  • Differential amplifier
  • Oscillator
  • Rectifier
  • None of the above
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  • Central Mode Rejection Ratio
  • Cross Mode Rejection Ratio
  • Common Model Rejection Ratio
  • Common Mode Rejection Ratio
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  • simply a linear Integrated Circuit (IC) having multiple-terminals
  • simply a hyper Integrated Circuit (IC) having multiple-terminals
  • simply a cross Integrated Circuit (IC) having multiple-terminals
  • None of the above
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  • Vout = AOL (V+ * V–)
  • Vout = AOL (V+/ V–)
  • Vout = AOL (V+ + V–)
  • Vout = AOL (V+ – V–)
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  • difference between two base currents
  • average of two base currents
  • collector current divided by current gain
  • None of the above
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  • Maximum rate of change of output voltage with time
  • Minimum rate of change of output voltage with time
  • Moderate rate of change of output voltage with time
  • None of the above
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  • Infinite voltage gain
  • Infinite bandwidth
  • Infinite output resistance
  • Infinite slew rate
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  • Signals can be amplified without attenuation
  • Output can drive infinite number of device
  • Output voltage occurs simultaneously with input voltage changes
  • Output common-mode noise voltage is zero
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  • to control the output voltage
  • to obtain finite output voltage
  • to receive zero noise output voltage
  • None of the above
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