Control System (BEE502) - AKTU Question Paper 2024-25
B.Tech · Semester 5 · Free PDF Download
This is the official AKTU Control System Previous Year Question Paper for B.Tech Semester 5, 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 5
Session:2024-25
University:AKTU / UPTU
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Questions Asked in 2024-25
Control System (BEE502) — extracted question text · 70 marks · 3 Hours
Section AAttempt all questions in brief. 2 x 07 = 14
- aExplain, how the control systems are classified? C O 1 K 3
- bDraw Torque –Speed characteristi c of an AC servo motor and men tion the effect of X/R ratio
- cThe transfer function of a system is given by Determine (i) Poles (ii) Zeros (iii) Characteristic equation an d (iv) Pole- Zero plot
- dExplain the term absolute and conditional stability. CO
- eDefine Phase margin, Gain margin Gain cross-over frequency and phase cross-over frequency
- fDraw Lag and Lead network with passive elements. CO
- gDiscuss Kalman’s test for deter mining state controllability. C O
Section BAttempt any three of the following: 07 x 3 = 21
- aReduce the block-diagram s hown in Fig (a). .Obtain overall transfer function Y(s)/F(s) using block-diagram reduction rules. Fig (a)
- bDraw the time response curve a nd define the time response specification of second order control system for unit step input
- cFor unity feedback system, open-loop transfer function is Find the range of K for which the system is stable. Also, deter mine the value of K for which the system response is oscillatory and the value of frequency of oscillation at this value of K
- dFor the function , Draw a sketch of the polar plot and find the intersection with the real and imaginary axis
- eThe system matrix of a linear time-invariant system is Determine the state transition matrix by power series method. Also, verify the result by Laplace transform method
Section CAttempt any one part of the following: 07 x 1 = 07
- aExplain the effect of feedback of control system on the followings: (i) Overall gain (ii) Bandwidth
- bObtain the transfer function Y 1(s)/F(s) of mechanical system shown in Fig- Fig.(b)
- a(i) Derive the expression for the rise time of the response to unit step input for the system whose closed loop transfer function is (ii) How steady state error of a control system is determined? How it can be reduced.? Discuss it
- bDiscuss Proportional Derivative controller and obtain its ov erall effect on specifications of the second order system
- aState and explain Hurwitz criterion. Also write a note on sp ecial cases of Routh’s criterion
- bDiscuss any three rules for construction of root locus. Also d e t e r m i n e angle of departure for the open loop transfer function of feedb ack
- aUsing standard transfer function of a second order system, d erive the expression of resonant peak and resonant frequency
- bSketch the Nyquist plot for G(S)H(s)=
- aExplain the effects and lim itations of three types of elec trical compensators
- bDiscuss the derivation of th e state model using following m ethod (i) Bush or companion form(ii) Jordan’s form
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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