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