B.TechSemester 42021-22Electronics EngineeringKOE048

Electronics Engineering (KOE048) - AKTU Question Paper 2021-22

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 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 4

Session:2021-22

University:AKTU / UPTU

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Questions Asked in 2021-22

Electronics Engineering (KOE048) — complete question paper

Section AAttempt all q u e s t i o n s i n b r i e f . 2x10 = 20

a
Si is preferred as compared to Ge in semiconductor devices. Justify this statement
b
Describe the term PIV. 1
c
Enlist the application of LED. 2
d
Describe the tunneling phenomenon. 2
e
Derive the relationship between α and β for BJT. 3
f
Draw the transfer characteristics of JFET. 3
g
Describe the term CMRR and slew rate of an op-amp. 4
h
Enlist the characteristics of ideal op-amp. 4 (i) Enlist the essential components of a CRT. 5 (j) Explain the application of DSO. 5

Section BAttempt any three o f t h e f o l l o w i n g : 1 0 x 3 = 3 0

a
Explain the working of PN junction diode with no-bias condi tion, forward bias condition and reverse bias condition. Also draw the V-I ch aracteristics of PN junction diode
b
Illustrate the working of half wave rectifier using circuit diagram also determine its different parameter
c
Mention the different biasing techniques used in BJT. Expla i n a n y t w o o f them
d
Draw the block diagram and equivalent circuit of an op-amp. Also explain op- amp as inverting and non-inverting amplifier
e
Illustrate the working of d igital multimeter with their block diagram. 5

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 1 0 x 1 = 1 0

a
Illustrate the diode resist ance and diode capacitance. 1
b
Differentiate between Avala nche breakdown and Zener Breakdo wn mechanism
a
Determine the output voltage and output waveform for a given input waveform. Assuming Silicon diodes
b
Explain the principle of operation and characteristics of a n LED and Tunnel diode
a
Draw the CE amplifier circuit and derive the expression for different characterizing parameters
b
(i) Explain the construction and working of JFET. (ii) An enhancement type NMOS transistor with Vt =0.7 V has its source terminal grounded and a 1.5 V applied to the gate. In what regi on does the device operate for
a
Draw the circuit diagram of an integrator and differentiato r also find their output
b
Illustrate the following op-amp parameters (i) input offset voltage (ii) output offset voltage (iii) input biased current (iv) input offset current (v) differential mode gain
a
Describe measurement of vo ltage, current, frequency and phase using CRO. 5
b
Draw the block diagram of digital voltmeter. Also explain t he ramp technique of digital multimeter

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.

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