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) — extracted question text · 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. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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