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) — complete question paper · 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. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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