B.TechSemester 62022-23Digital Control SystemKEE-063
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Digital Control System (KEE-063) - AKTU Question Paper 2022-23

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Digital Control System Previous Year Question Paper for B.Tech Semester 6, 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 6
Session:2022-23
University:AKTU / UPTU

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Questions Asked in 2022-23

Digital Control System (KEE-063) — complete question paper

Section AAttempt all questions in brief. 2 x 10 = 20
  • a
    Discuss the methods of representation in discrete time system
  • b
    What is the condition for sampling of a signal in sampling theorem?
  • c
    What do you mean by Sampled signal flow graph
  • d
    Explain mason’s gain formula
  • e
    What do you mean by state of a dynamic system?
  • f
    Define the term (a) State variable (b) State space
  • g
    What do you mean by bounded input bounded output s tability?
  • h
    What do you mean by bode plot? i. Explain the properties of state transition matrix. j. Discuss the mapping of real and imaginary axis in S-plane to Z -plane
Section BAttempt any three of the following: 10x3=30
  • a
    Describe the sample and hold operation
  • b
    Explain and determine the pulse transfer function of a given system
  • c
    Determine the stability and range for K of th e system shown in fig. using Lyap unov equation
  • d
    Explain the strengths of frequency response appr oach, Establish correlation between frequency domain response and time domain response
  • e
    What do you mean by controllability and observab ility of a linear time invariant system? Explain controllability tests
Section CAttempt any one part of the following: 10x1=10
  • a
    Explain and derive the relations for steady stat e accuracy of discrete time system
  • b
    Draw the basic digital control system and explain t he function of each block. Also discuss the sampling effects
  • a
    Discuss the relationship between Laplace transfo rm and Z transform
  • b
    Explain a closed loop position control system an d transform it into state
  • a
    Write short note on;
    (i)Stability analysis using bi-linear transformation
(ii)Transient and steady state responses
  • b
    What is Jury stability criterion? Explain stabil ity on the z-plane
  • a
    Use the root locus method of plotting to sketch the loci of the roots of a unity feedback open loop transfer function given below. F ind the range of K that yields a stables ystem
  • b
    Distinguish between mapping the oremand Nyquistst a bility criterion with suitable example. Write the steps of drawing the Ny quist plot for predicting there lativest ability of system
  • a
    Explain Lyapunov’s stability theorem and stabili ty of linear systems
  • b
    Obtain the companion first form, second form and Jordan canonical form realizations and draw block diagram for the transfer function

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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