Fundamentals of Electronics Engineering Unit 1 – Semiconductor Diode and Applications: important questions for AKTU
Unit 1 (Semiconductor Diode and Applications) questions that AKTU repeats most often. This unit carries about 26 marks per paper. Start with the repeated questions, then the most asked topics.
Most repeated Unit 1 questions
- Define Clamper. Determine output voltage for the given network. (Circuit: Vi=10V/-20V sinusoidal, 100µF capacitor, 10V battery, RL=10kΩ) (10 marks, 2022, Clippers and Clampers) – also asked in 2022, 2023, 2024, 2025, 2026
- Write difference between half wave and Full wave (Centre tap) rectifiers. Draw a neat circuit diagram of bridge rectifier and explain its operation with output waveforms. Drive the average value of current. (7 marks, 2026, Rectifier Circuits) – also asked in 2022, 2023, 2024, 2025
- Compare and analyze the operation and waveforms of half-wave and full-wave rectifiers. Include derivations for average and RMS current. (7 marks, 2025, Rectifier Circuits) – also asked in 2022, 2023, 2024, 2026
Most important Unit 1 topic
- Special Purpose Diodes (Unit 1: Semiconductor Diode and Applications) – asked 15 times in 2022, 2023, 2024, 2025, 2026
Most asked Unit 1 topics
- Special Purpose Diodes – asked 15 times
- Clippers and Clampers – asked 10 times
- Semiconductor Diode Fundamentals – asked 9 times
More Unit 1 previous year questions
- What do you mean by Doping? Compare between Clipper and Clamper Circuit. (2 marks, 2026, Clippers and Clampers)
- (i) Explain the working of p-n junction diode and draw its V-I Characteristics. (ii) Sketch the output voltage waveform for the given circuit. Assume ideal diode used. (7 marks, 2026, Semiconductor Diode Fundamentals)
- (i) What is voltage multiplier circuit? Draw the circuit diagram of voltage tripler circuit. (ii) Explain the working and V-I characteristics of LED with the help of suitable diagram. (7 marks, 2026, Special Purpose Diodes)
- Compare Avalanche and Zener breakdown. (2 marks, 2025, Special Purpose Diodes)
- Why does the depletion region width decrease after putting diode in forward bias? (2 marks, 2025, Semiconductor Diode Fundamentals)
Unit 1 syllabus topics
- Semiconductor Diode Fundamentals
- Zener Diode
- Rectifier Circuits
- Clippers and Clampers
- Voltage Multiplier Circuits
- Special Purpose Diodes