Operational Amplifiers 1 Questions and Answers
Operational Amplifiers reasoning questions with answers cover critical topics such as op-amp characteristics, applications, and frequency response. These logical reasoning questions are designed to test analytical and conceptual clarity in electronics circuits. Practicing reasoning questions for competitive exams like GATE, ISRO, and BARC builds a deep understanding of amplifier operation and troubleshooting. Strengthen your preparation with detailed solutions and explanations that help simplify complex op-amp principles for exam success.
Operational Amplifiers 1
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36 questions
11. A portion of the output that provides circuit stabilization is considered to be:
- negative feedback
- distortion
- open-loop
- positive feedback
12. How many leads does the TO-5 metal can package of an operational amplifier have?
- 8, 10, or 12
- 6, 8, or 10
- 8 or 14
- 8 or 16
13. If a noninverting amplifier has an RIN of 1000 ohms and an RFB of 2.5 kilohms, what is the RIN voltage when 1.42 mV is applied to the correct input?
- 3.5 mV
- ground
- 1.42 mV
- 0.56 mV
14. The closed-loop voltage gain of an inverting amplifier equals:
- the ratio of the input resistance to the feedback resistance
- the open-loop voltage gain
- the feedback resistance divided by the input resistance
- the input resistance
15. All of the following are basic op-amp input modes of operation EXCEPT
- inverting mode
- common-mode
- double-ended
- single-ended
16. A circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier? A. common-mode B. darlington
- differential
- operational
17. With negative feedback, the returning signal
- is proportional to the output current
- is proportional to the differential voltage gain
- opposes the input signal
- aids the input signal
18. The voltage follower has a:
- closed-loop voltage gain of unity
- small open-loop voltage gain
- closed-loop bandwidth of zero
- large closed-loop output impedance
19. The ratio between differential gain and common-mode gain is called:
- amplitude
- differential-mode rejection
- common-mode rejection
- phase
20. If the gain of a closed-loop inverting amplifier is 3.9, with an input resistor value of 1.6 kilohms, what value of feedback resistor is necessary?
- 6240 ohms
- 2.4 kilohms
- 410 ohms
- 0.62 kilohms