Special Purpose Op-Amp Circuits 1 Questions and Answers
Special Purpose Operational Amplifier (Op-Amp) Circuits are widely used in filters, oscillators, and voltage regulators. These circuits are essential for analog signal processing and control applications. In GATE, ISRO, and DRDO exams, aptitude questions and answers based on Op-Amp configurations, characteristics, and applications frequently appear. Understanding the working principles of comparators, precision rectifiers, and integrators helps students solve circuit-related problems efficiently. Practice aptitude questions and answers with explanations to enhance conceptual clarity and problem-solving skills in analog electronics.
Special Purpose Op-Amp Circuits 1
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59 questions
21. A half-wave precision rectifier outputs
- Both halves
- Only positive half
- Only negative half
- DC level
22. A full-wave precision rectifier uses
- One diode
- Two diodes and op-amps
- No diodes
- Zeners only
23. A peak detector stores the signal peak on a
- Resistor
- Inductor
- Capacitor
- Transformer
24. In a sample-and-hold circuit, the hold element is typically a
- Resistor
- Capacitor
- Inductor
- Transformer
25. A clamping (DC restorer) circuit shifts the waveform
- Frequency
- Phase
- DC level
- Amplitude
26. A clipper circuit is used to
- Integrate signals
- Limit amplitude beyond a threshold
- Differentiate signals
- Demodulate FM
27. A logarithmic amplifier output is proportional to
- Input
- Square of input
- Log of input
- Inverse of input
28. An antilog amplifier provides output proportional to
- Input
- e^(input)
- log(input)
- 1/input
29. A current-to-voltage (transimpedance) amplifier uses feedback
- Resistor
- Capacitor only
- Inductor
- Transformer
30. A voltage-to-current (V-I) converter is commonly called
- Transconductance amplifier
- Transresistance amplifier
- Instrumentation amplifier
- Chopper amplifier