Fundamentals Of Electronics Engineering (BEC101) - AKTU Question Paper 2025-26
B.Tech · Semester 1 · Free PDF Download
This is the official AKTU Fundamentals Of Electronics Engineering Previous Year Question Paper for B.Tech Semester 1, 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
Fundamentals Of Electronics Engineering (BEC101) — complete question paper · 70 marks · 3 Hours
- aWhat do you mean by Doping? Compare between Clipper and Clamper Circuit
- bDerive relation between current gain in CB and CE configuration of transistor. For a transistor IE = 10mA and α= 0.987. find value of IC
- cDefine CMRR, Slew Rate, and PSRR of Operational Amplifier
- dWhat are the basic laws and theorems of Boolean algebra?
- eDetermine base of the following: (i) (211)X = (152)8 (ii) (193)x = (623)8
- fDefine modulation index for AM wave. State the concept of over, under modulation
- gA 320W carrier is simultaneously modulated by two audio waves with percentage modulation of 45 and 60 respectively. What is the sideband power radiated?
- a(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
- b(i) Explain the input and output characteristics of a transistor in CE configuration. (ii) A JFET has parameters of VGS (off) is equal to -20V and IDSS equal to 12 mA. Plot the transconductance curve for the device using VGS values of 0V, -5V, -10V, -15V, and
- cDescribe 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
- dSimplify the function F= ∑m(0,3,5,7,8,9,10,12,13) + ∑d(1,6,11,14) using K-map and also implement the simplified expression using Basic gates only
- e(i) Define Modulation and also Listed the need of modulation in communication. (ii) When an AM broadcast transmitter is 60% modulated then its antenna current is 10A.what will be the antenna current when the modulation depth is Increased by 70%
- aWrite 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
- b(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
- aDescribe the construction and working of N-Channel depletion type MOSFET along with their transfer characteristics
- bWrite the only 5 differences between BJT and JFET. Draw and explain the construction and working of N -Channel JFET with suitable diagram and also draw its characteristic graphs
- a(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
- bDetermine 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) Fig-1 Fig-2
- aPerform following operation as indicated:- (i) Convert (472.254)8 to its decimal value (ii) Subtract using 1’s complement: (10111)2 - (110011)2. (iii) Calculate the 1’s and 2’s complement of binary number 1010101. (iv) Subtract using 2’s complement: (1010)2 – (0101)2. (v) Convert (5678)10 into BCD
- b(i) Define universal logic Gates. Realize XOR, XNOR gates using NAND and NOR gate (ii) Prove the following Boolean functions: AB+ABC+A𝑩̅=A and A𝑩̅+𝑨̅B+AB+𝑨̅𝑩̅=1
- aDerive an expression for Amplitude Modulated wave. An audio frequency signal 20sin (2π ×500t) is used to amplitude modulated a carrier of 40sin (2π ×105t). Calculate (i) Modulation index (ii) Amplitude and frequency of each side band (ii) Bandwidth
- bWhat is Wireless Communication? Explain the basic principles of Satellite Communication system with the help of block diagram. Also state the advantages and disadvantages of Wireless Communication
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 — BEC101
Questions that appeared in more than one session, found by comparing 4 years of Fundamentals Of Electronics Engineering papers (2022-23, 2023-24, 2024-25, 2025-26)
Simplify the function F= ∑m(0,3,5,7,8,9,10,12,13) + ∑d(1,6,11,14) using K-map and also implement the simplified expression using Basic gates only
Appeared in: 2023-24 · 2025-26
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
Appeared in: 2022-23 · 2025-26
Describe the construction and working of N-Channel depletion type MOSFET along with their transfer characteristics
Appeared in: 2023-24 · 2025-26
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