B.TechSemester 42022-23Analog ElectronicsKOE-047

Analog Electronics (KOE-047) - AKTU Question Paper 2022-23

B.Tech · Semester 4 · Free PDF Download

This is the official AKTU Analog Electronics Previous Year Question Paper for B.Tech Semester 4, academic session 2022-23. 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:2022-23

University:AKTU / UPTU

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Questions Asked in 2022-23

Analog Electronics (KOE-047) — complete question paper

Section AAttempt all questions in brief. 2 x 10 = 20

a
What do you understand by DC and AC analysis
b
Define stability factor for a biasing scheme
c
Define the efficiency of power amplifiers
d
If differential mode gain of a differential amplifier is 1000 and common mode gain is 10, calculate the CMRR in decibel for it
e
If open loop gain of an amplifier is 2000 and feedback factor of the system is .02, calculate the closed loop gain for negative feedback
f
Explain the concept of virtual short in operational amplifier
g
List the properties of an ideal operational amplifier
h
Define frequency stability in oscillators. (i) Differentiate between Comparator and Schmitt Trigger. (j) What is meant by Filter

Section BAttempt any three of the following: 10x3=30

a
Describe emitter follower. Derive expression for input & output resistance
b
Discuss the advantages of negative feedback in detail with explanation
c
Explain the working of a tank circuit. Also derive the frequency of oscillation and condition of gain to get sustained oscillations for Colpitts oscillator
d
Describe following application of Op-amp (i) Precision rectifier (ii) Phase Changer (iii) Averaging (iv) Non-inverting summer
e
What is Super Diode? Describe the working of full w ave precision rectifier giving its transfer characteristic

Section CAttempt any one part of the following: 10x1=10

a
Define stability factor. What is meant by transisto r-biasing. Describe voltage divider bias circuits
b
Describe MOSFET internal capacitances. Draw the high frequency equivalent circuit model for the MOSFET
a
Describe an amplifier using shunt – series feedback , derive the expression for the output resistance with feedback and show that due to negative feedback, the output resistance reduces below its value without feedback
b
Describe Class B operation giving its circuit and t ransfer characteristics curve. Also obtain its power conversion efficiency
a
Describe the operation of RC phase shift oscillator giving its neat diagram. Also drive expressions for its frequency of operation an d gain for the sustained oscillations
b
With neat diagram explain the generation of square wave using Op-amp and calculate its total time period
a
What are the desirable characteristics of current m irror circuits. Draw the simple BJT current mirror and obtain the expression for cu rrent transfer ratio using matched transistors
b
Describe the operation giving circuit of BJT differ ential amplifier. Obtain expression for input differential resistance and differential voltage gain
a
What is a Filter circuit. Give classification of fi lter circuit on the basis its frequency response. Design a second order High Pass Filter to provide a Cut-off frequency of 1 kHz and Pass band gain of 2
b
Define the following with reference to filter : (i) Pass Band (ii) Stop Band (iii) Roll-off rate (iv) Cut-off frequency

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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