B.TechSemester 62024-25Control SystemBEC602
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Control System (BEC602) - AKTU Question Paper 2024-25

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Control System Previous Year Question Paper for B.Tech Semester 6, 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 6
Session:2024-25
University:AKTU / UPTU

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Questions Asked in 2024-25

Control System (BEC602) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 02 x 7 = 14
  • a
    Compare between open loop &closed loop system. 1 2
  • b
    Define transient response and st eady state response of a system. 3 1
  • c
    Write short note on Kalman’s test. 2 2
  • d
    The open loon transfer function of unity feedback system is given by Determine the Kp&Kv
  • e
    Check the stability of the syste m whose characteristic equation is given by
  • f
    Explain the term (i) asymptotes (ii) centroid. 4 2
  • g
    Define relative and absolute stability. 5 1
Section BAttempt any three of the following: 07 x 3 = 21
  • a
    Draw the block diagram and de rive the transfer function of a rmature controlled dc motor
  • b
    A system is described by the matrices Determine the transfer function
  • c
    Consider a unity feedback control system with the closed loo p control function Determine the open loop transfer function. Show that the steady state error in the unit ramp input response is given by
  • d
    Explain concept of stability in detail and also explain the effect of location of poles on stability
  • e
    Sketch the bode plot for the transfer function (on semi log paper)
Section CAttempt any one part of the following: 07 x 1 = 07
  • a
    Determine the ratio C(s)/R(s) for the system shown in figure: 1 3
  • b
    For the given signal flow graph find the ratio C/R
  • a
    Consider the following system Test for controllability and observability
  • b
    A system is described by th e following transfer function Find the state and output equation of the system
  • a
    The open loop transfer function of a servo system with unity feedback is given by Determine the characteristic equa tion of the system, damping ra tio, undamped natural frequency of osc illation. What is the percenta ge overshoot of the response to a unit step input
  • b
    Derive the expression for response of first order system wit h unit step input
  • a
    For a unity feedback system the open loop transfer function is given by Sketch the root locus. (on graph paper)
  • b
    Explain Routh Hurwitz’s stability criteria. For a system wit h characteristic equation 𝑠଺ ൅3 𝑠ହ ൅4 𝑠ସ ൅6 𝑠ଷ ൅5 𝑠ଶ ൅3 𝑠൅2ൌ0 , examine stability
  • a
    Sketch the polar plot of
  • b
    With a suitable diagram define
  • a
    Phase crossover frequency
  • b
    Gain crossover 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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