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- Question
The effectiveness of a filter in rejecting signals beyond cutoff frequency is a function of the filter roll-off rating.
Options- A. True
- B. False
- Correct Answer
- True
- 1. The output voltage of a summing amplifier is proportional to the product of the input voltages.
Options- A. True
- B. False Discuss
- 2. To operate properly, an oscillator requires an external ac input signal.
Options- A. True
- B. False Discuss
- 3. When used as a comparator, an op-amp is wired in a closed-loop configuration.
Options- A. True
- B. False Discuss
- 4. A zero-level detector is a type of comparator circuit.
Options- A. True
- B. False Discuss
- 5. The feedback component in an op-amp integrator is a capacitor.
Options- A. True
- B. False Discuss
- 6. 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
- 7. A two-pole active filter produces a roll-off rate of ?20 dB/decade.
Options- A. True
- B. False Discuss
- 8. The control element in a basic shunt voltage regulator is a zener diode.
Options- A. True
- B. False Discuss
- 9. A Wien-bridge oscillator uses _________.
Options- A. positive feedback
- B. negative feedback
- C. both types of feedback
- D. an LC tank circuit Discuss
- 10. 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
Basic Op-Amp Circuits problems
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Correct Answer: False
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: False
Correct Answer: False
Correct Answer: both types of feedback
Correct Answer: reduced, equals one
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