B.TechSemester 42024-25Analog Electronics CircuitsBOE408
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Analog Electronics Circuits (BOE408) - AKTU Question Paper 2024-25

B.Tech · Semester 4 · Free PDF Download

This is the official AKTU Analog Electronics Circuits Previous Year Question Paper for B.Tech Semester 4, 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 4
Session:2024-25
University:AKTU / UPTU

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Questions Asked in 2024-25

Analog Electronics Circuits (BOE408) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 02 x 7 = 14
  • a
    Define a voltage amplifier. What are its ideal characteristics?
  • b
    What is transconductanceamplifier and trans-resistance amplifier
  • c
    Why is the Miller effect significant in high-frequency amplifiers?
  • d
    What is voltage shunt feedback topology. Give suitable example
  • e
    State the Barkhausen criterion for sustained oscillations
  • f
    What is Input Common Mode Range (ICMR)? Why is it important?
  • g
    In an inverting Op-Amp given that input voltage is 0.5 V, R f=100 kΩ and Rin=10 kΩ, then what is the output voltage?
Section BAttempt any three of the following: 07 x 3 = 21
  • a
    Draw the small-signal hybrid-π model for a BJT and explain its components
  • b
    Explain cascodeand cascade amplifiers. Compare the frequency re sponse of a cascode amplifier with a single-stage amplifier
  • c
    What is a Hartley oscillator and how it is constructed? How do es the inductive feedback in a Hartley oscillato r sustain oscillations?Derive th e expression for the frequency of oscillation for the Hartley oscillator
  • d
    What is differential amplifier? Classify and explain its operat ion. Evaluate expression for differential gain, common mode gain
  • e
    Draw Op-Amp based Schmitt Trigger Circuit and explain its opera tion,hysteresis loop and applications
Section CAttempt any one part of the following: 07 x 1 = 07
  • a
    Derive expressions for Av, Rin, and R out for a CS amplifier using the small-signal model
  • b
    Determine the dc level of IB and Vc for the network shown in figure below
  • a
    A voltage series nega tive feedback amplifier has voltage gain w ithout feedback A=500,input resistance R i=3kΩ,output resistance R o=20kΩ and feedback ratio β=0.01. Find the voltage gain A f,input resistance R if and output resistance R of of the amplifier with feedback
  • b
    Differentiate in between Class A, B, AB and C Amplifiers
  • a
    Draw the circuit diagram RC phas e shift oscillator. Why is at l east three RC stages used in a phase shift osc illator? Derive the frequency o f oscillation for a RC phase shift oscillator
  • b
    Draw and explain Clapp oscillator. Derive the frequency express ion for a Clapp oscillator. Comment about its stability as compared to the Colpitt oscillator
  • a
    Define the minimum sustainable voltage V ON i n c u r r e n t m i r r o r . H o w i t i s determined? Draw and explain different topologies of current mirror and th eir significant features
  • b
    D e s c r i b e d i f f e r e n t s t e p s i n t h e design of differential amplifie r for a given specification, design of gain stages and output stages
  • a
    What are the key steps in designing an op-amp-based active filt er? Calculate the lower and upper cut off frequencies of the band pass filter circuit shown below
  • b
    With suitable circuit diagram ob tain the expression for integra tor and differentiator OPAMP

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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