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  • Question

  • If the two inputs to a differential amplifier are exactly the same, then the output is the signal multiplied by two.


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  • A. True
  • B. False

  • Correct Answer
  • False 

    • Operational Amplifiers problems

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    • 1. The frequency of a crystal is dependent on how much voltage is applied to activate it.

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    • A. True
    • B. False
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    • 2. An S-R flip-flop is an example of a bistable multivibrator circuit.

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    • A. True
    • B. False
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    • 3. An open feedback resistor in an inverting or noninverting op-amp circuit can cause severe clipping of the output signal.

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    • A. True
    • B. False
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    • 4. Current actually flows into or out of a virtual ground.

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    • A. True
    • B. False
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    • 5. A virtual ground is a ground for current, but not for voltage.

    • Options
    • A. True
    • B. False
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    • 6. If an input signal is applied to the inverting input of an op-amp with the noninverting input grounded, the output signal would be opposite in polarity with the input.

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    • A. True
    • B. False
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    • 7. A monostable multivibrator must be triggered.

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    • A. True
    • B. False
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    • 8. The difference between the upper and lower trigger points is called the Schmitt trigger.

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    • A. True
    • B. False
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    • 9. The inverting input is pin 2.


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

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    • A. True
    • B. False
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