Basic Op-Amp Circuits problems
- 1. The ramp voltage at the output of an op-amp integrator
Options- A. increases or decreases at a linear rate
- B. increases or decreases exponentially
- C. is always increasing and never decreasing
- D. is constant Discuss
Correct Answer: increases or decreases at a linear rate
- 2. In an averaging amplifier, the input resistances are
Options- A. equal to the feedback resistance
- B. less than the feedback resistance
- C. greater than the feedback resistance
- D. unequal Discuss
Correct Answer: greater than the feedback resistance
- 3. A basic series regulator has
Options- A. an error detector
- B. a load
- C. a reference voltage
- D. both an error detector and a reference voltage Discuss
Correct Answer: both an error detector and a reference voltage
- 4. When the capacitance in an active high-pass filter increases, the critical frequency decreases.
Options- A. True
- B. False Discuss
Correct Answer: True
- 5. The feedback component in an op-amp integrator is a capacitor.
Options- A. True
- B. False Discuss
Correct Answer: True
- 6. A zero-level detector is a type of comparator circuit.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. When used as a comparator, an op-amp is wired in a closed-loop configuration.
Options- A. True
- B. False Discuss
Correct Answer: False
- 8. To operate properly, an oscillator requires an external ac input signal.
Options- A. True
- B. False Discuss
Correct Answer: False
- 9. The output voltage of a summing amplifier is proportional to the product of the input voltages.
Options- A. True
- B. False Discuss
Correct Answer: False
- 10. 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
Correct Answer: True
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