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Electronics
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Operational Amplifiers
Comments
Question
Changing the input voltage to an op-amp circuit will change its voltage gain.
Options
A. True
B. False
Correct Answer
False
Operational Amplifiers problems
Search Results
1. An operational amplifier contains a differential amplifier, a voltage amplifier, and an output amplifier.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
2. This circuit is a voltage follower.
Options
A. True
B. False
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Correct Answer: False
3. If the frequency of an astable multivibrator is 54.86 kHz then its period is 1.82 s.
Options
A. True
B. False
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Discuss
Correct Answer: False
4. The
voltage-follower
amplifier circuit has a fixed voltage gain of approximately 10.
Options
A. True
B. False
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Discuss
Correct Answer: False
5. This circuit is operating in a closed-loop mode.
Options
A. True
B. False
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Correct Answer: False
6. A virtual ground is a ground for current, but not for voltage.
Options
A. True
B. False
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Correct Answer: False
7. Current actually flows into or out of a
virtual ground
.
Options
A. True
B. False
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Correct Answer: False
8. An open feedback resistor in an inverting or noninverting op-amp circuit can cause severe clipping of the output signal.
Options
A. True
B. False
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Correct Answer: True
9. An S-R flip-flop is an example of a bistable multivibrator circuit.
Options
A. True
B. False
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Correct Answer: True
10. The frequency of a crystal is dependent on how much voltage is applied to activate it.
Options
A. True
B. False
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Correct Answer: False
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