Fundamentals of Electronics Engineering Unit 3 – Operational Amplifiers: AKTU previous year questions
40 AKTU questions from Unit 3 (Operational Amplifiers) asked in 2022–2026, tagged by marks, year and topic. In short: about 26 marks of every paper come from this unit; the most asked topic is Op-Amp Fundamentals (20 times); 36 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 3 previous year questions
- Define CMRR, Slew Rate, and PSRR of Operational Amplifier. (2 marks, 2026, Op-Amp Fundamentals)
- Describe the structure of an operational amplifier using a block diagram and explain each stage in detail? Draw the circuit diagram of differential amplifier using op-amp and find out the expression for output voltage. (7 marks, 2026, Op-Amp Fundamentals)
- (i) Write the comparison between Inverting and Non-inverting Op-Amp. (ii) Describe the Differentiator and Integrator operation of amplifier and also formulate its overall output voltage. (7 marks, 2026, Integrator and Differentiator)
- Determine the output voltage of the given following networks. (for figure-1 V1=0.2v and V2=0.5v) (for figure-2 V1=10v and V2=15v) (7 marks, 2026, Linear Op-Amp Circuits)
- Why is a differential amplifier configuration preferred as the input stage of an op-amp? (2 marks, 2025, Op-Amp Fundamentals)
- What do you mean by CMRR and Why is the Common-Mode Rejection Ratio (CMRR) critical in instrumentation applications using Op-Amps? (2 marks, 2025, Op-Amp Fundamentals)
- Write the ideal op-Amp characteristics? (2 marks, 2025, Op-Amp Fundamentals)
- Draw and explain the Op-Amp IC-741. Also draw equivalent circuit of Op-Amp. (7 marks, 2025, Op-Amp Fundamentals)
- Calculate the output voltage for the given circuit. (Op-Amp differential circuit: A=4, Rin1=10kΩ, Rin2=250Ω, RL=3kΩ, inputs 12V and 9V) (7 marks, 2025, Op-Amp Fundamentals)
- Explain the working of op-amp as Integrator and derive its output voltage. (7 marks, 2025, Integrator and Differentiator)
- Explain the working of integrator and differentiator Op-Amp circuits. Include waveform examples and applications. (7 marks, 2025, Integrator and Differentiator)
- Derive the output voltage is proportional to the difference between the two input voltages in Op-amp. (7 marks, 2025, Op-Amp Fundamentals)
Most asked Unit 3 topics
- Op-Amp Fundamentals – asked 20 times
- Linear Op-Amp Circuits – asked 14 times
- Integrator and Differentiator – asked 6 times
Unit 3 question pattern
- 2-mark questions: 12 asked in 2022–2026
- 7-mark questions: 22 asked in 2022–2026
- 10-mark questions: 6 asked in 2022–2026
- About 26 marks from Unit 3 in every paper
- 36 questions were asked again in a later year
Unit 3 questions year by year
- 2026: 4 Unit 3 questions asked (23 marks across that year's papers)
- 2025: 10 Unit 3 questions asked (55 marks across that year's papers)
- 2024: 8 Unit 3 questions asked (46 marks across that year's papers)
- 2023: 10 Unit 3 questions asked (50 marks across that year's papers)
- 2022: 8 Unit 3 questions asked (64 marks across that year's papers)