Fundamentals of Electronics Engineering (BEC101) important questions and topics for AKTU

These are ranked by how often AKTU repeats them across 8 papers. Repeated questions and "very likely" topics are the safest marks in the exam.

Most repeated Fundamentals of Electronics Engineering 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
An Audio frequency signal 10Sin(6π×400t) is used to amplitude modulate a carrier of 25sin(4π×10⁵t). Calculate: (i) Modulation Index (ii) Amplitude of each side band (iii) Total power delivered to the load of 2KΩ (iv) Bandwidth (v) Transmission efficiency (10 marks, 2022, Amplitude Modulation) – 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
An AM wave is represented by the expression: V = 5 (1 + 0.6 cos 6280 t) sin 211 × 10⁴ t volts (i) What are the minimum and maximum amplitudes of the AM wave? (ii) What frequency components are contained in the modulated wave and what is the amplitude of each component? (7 marks, 2025, Amplitude Modulation) – also asked in 2022, 2023, 2024, 2026

Amplitude Modulation (Unit 5: Fundamentals of Communication Engineering) – asked 26 times in 2022, 2023, 2024, 2025, 2026
Op-Amp Fundamentals (Unit 3: Operational Amplifiers) – asked 20 times in 2022, 2023, 2024, 2025, 2026
Bipolar Junction Transistor (Unit 2: Transistors — BJT and FET) – asked 18 times in 2022, 2023, 2024, 2025, 2026