B.TechSemester 12024-25Fundamentals Of Electronics EngineeringBEC101

Fundamentals Of Electronics Engineering (BEC101) - AKTU Question Paper 2024-25

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 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 1

Session:2024-25

University:AKTU / UPTU

Rate this paper

Questions Asked in 2024-25

Fundamentals Of Electronics Engineering (BEC101) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 2 x 07 = 14

a
Why does the depletion region width decrease after putting dio de in forward bias?
b
What is negative resistance on tunnel diode?
c
Why are FETs known as unipolar and voltage-controlled devices?
d
Write the ideal op-Amp characteristics?
e
Why are NAND and NOR gates called universal gates?
f
What are the binary-arithmetic operations for 11.10 + 10.11 + 111.00 +
g
A 600 watt carrier power is modulated to depth of 80%, calcula te the total power in the modulated wave

Section BAttempt any three of the following: 7 x 3 = 21

a
For the circuit shown in Fig. find the maximum and minimum v alues of zener diode current
b
Why is common collector mode generally not preferred? Increase in collector emitter voltage from 5V to 8V causes incr ease in collector current from 5mA to 5.3 mA. Determine the dynamic outp ut resistance
c
Calculate the output volta ge for the given circuit
d
Explain the working of op-amp as Integrator and derive its o utput voltage
e
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 co mponents are containe d in the modulated w ave and what is the amplitudeof each component?

Section CAttempt any one part of the following: 07 x 1 = 07

a
An a.c. supply of 230 V is applied to a half-wave rectifier circuit through
a
transformer of turn ratio 10 : 1. Find (i) the output d.c. voltage and (ii) the peak inverse voltage. Assume the diode to be ideal
b
What are the advantages of negative clipper circuits? For the given input waveform to the given circuit, what is the peak value of the output waveform?
a
Explain, why is enhancement MOSFET preferred over depletion MOSFET for switching purposes?
b
In CB configuration, the value of α=0.98A. A voltage drop of 4 . 9V i s obtained across the resistor of 5KΩ when connected in collector circuit. Find the base current
a
Derive the output voltage is proportional to the difference between the 3 K3 two input voltages in Op-amp
b
Calculate the output of the circuit shown in Fig
a
How can I solve this, F =∑ (0,1,2, 3,5, 7,13,15) +d (8,10) s implify using K-Map and design logic resultant circuit using basic logic gates?
b
Minimize the following Boolean function in POS form using the K map
a
A sinusoidal carrier voltage of frequency 1 MHz and amplitud e 100 volts is amplitude modulated by the sinusoidal voltage of frequ ency 5 kHz producing 50% modulation. Cal culate the frequency and ampli tude of lower and upper sideband terms
b
Derive the transmission efficiency and total power of amplit ude modulated wave assuming message and carrier wave as sinusoidal wave

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)

A 600 watt carrier power is modulated to depth of 80%, calcula te the total power in the modulated wave

Appeared in: 2022-23 · 2024-25

Calculate the output volta ge for the given circuit

Appeared in: 2023-24 · 2024-25

Explain the working of op-amp as Integrator and derive its o utput voltage

Appeared in: 2022-23 · 2024-25

Calculate the output of the circuit shown in Fig

Appeared in: 2022-23 · 2024-25