Electronics Engineering (BOE409) - AKTU Question Paper 2025-26
B.Tech · Semester 4 · Free PDF Download
This is the official AKTU Electronics Engineering Previous Year Question Paper for B.Tech Semester 4, academic session 2025-26. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
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Questions Asked in 2025-26
Electronics Engineering (BOE409) — complete question paper · 70 marks · 3 Hours
- aDefine doping process. How we obtain N-type and P-type semiconductors
- bWrite the difference between Clipper and Clamper circuits?
- cDefine the operating point (Q-Point) of a BJT and what is its importance?
- dDefine CMRR and Slew rate of Op-Amplifier
- eWrite the performance comparison between Ideal and Practical Operational Amplifier (Op-Amp)
- fWhat is the working principle of a ramp-type DVM?
- gDefine these term Tunneling process
- a(i) Define static and dynamic resistance of a PN junction diode. (ii) Explain the formation of depletion layer in PN junction and also explain its penetration during doping, biasing
- bExplain the Construction and working principle, characteristic of LED. and varactor diode
- c(i) Draw and Explain Common emitter configuration of BJT and also Explain the Input and output characteristic of CE configuration. (SEM. IV) THEORY EXAMINATION 2025-26 ELECTRONICS ENGINEERING (ii) Derive relation between current gain in CB and CE configuration of transistor. For a transistor IE= 10mA and α= 0.987.find value of IC
- dDescribe the following Operational Amplifier circuits: - (i) Summing amplifier (ii) Subtractor circuit (iii) Unity follower circuit
- eExplain how voltage, phase and frequency are measured using CRO with diagrams
- aDiscuss the different types of junction break down that can occur in a reverse biased diode. Explain the shape of the break down diode characteristics
- bHow Zener diode is used as Shunt regulator, Explain it? For the circuit shown below, determine the value of Maximum and minimum diode
- aWhat is voltage multiplier circuit? Draw and explain the circuit diagram of voltage tripler circuit
- b(i) Write difference between Half wave and full wave rectifier. (ii) Draw and explain the working of Centre-Taped full wave rectifier. Also calculate its efficiency and ripple factor
- aWrite any 5 difference between BJT and JFET. Draw and explain the construction and working of N-Channel JFET with suitable diagram and also draw its characteristic graphs
- bExplain the construction, working and characteristics of n-channel Depletion type MOSFET.Write difference between Enhancement and depletion type MOSFET?
- a(i) A 5mV, 1 KHz sinusoidal voltage is applied at the input of an Op-Amp Integrator circuit for which R= 100 kΩ and C = 1μF.Calculate the Vo. (ii) Write the difference between inverting and non-inverting Op-Amp?
- bDetermine the output voltage of the given following networks. (SEM. IV) THEORY EXAMINATION 2025-26 ELECTRONICS ENGINEERING (for figure-1 V1=0.2v and V2=0.5v) (for figure-2 V1=10v and V2=15v) Fig-1 Fig-2
- aExplain the working of ramp-type digital voltmeter with diagram and also describe the advantages of DVM
- bExplain the construction and working of a CRO with neat diagram
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
Repeated Questions — BOE409
Questions that appeared in more than one session, found by comparing 3 years of Electronics Engineering papers (2023-24, 2024-25, 2025-26)
Define the operating point (Q-Point) of a BJT and what is its importance?
Appeared in: 2023-24 · 2025-26
Explain how voltage, phase and frequency are measured using CRO with diagrams
Appeared in: 2023-24 · 2025-26
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