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# Previous Year Exam Questions for Control System - CS of 2017 - AKTULKO by Rishav Khatri

• Control System - CS
• 2017
• PYQ
• Dr.APJ Abdul Kalam technical University - AKTULKO
• Electrical and Electronics Engineering
• B.Tech
• 191 Views
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#### Previous Year Exam Questions for Control System - CS of 2017 - AKTULKO by Rishav Khatri / 3

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a. For the system shown in figure , determine the type of system, error coefficient and the error for the following inputs: (i) r(t)=6, (ii) r(t) = 8t (iii) r(t) = 10+4t+1.5t2 b. A linear time invariant system is characterized by the state variable model. Examine the controllability and observability of the system A= B= ; C= ] c. Consider a unity feedback system with a forward path transfer function, G(s) = Draw the root locus. d. Write short note on: i.Centroid ii.Breakaway points iii.Steady state error e. For a unity feedback system having G(s)= , find (i) the type of the system, (ii) all error coefficients and (iii) errors for ramp input with magnitude 5. SECTION - C 3.Attempt any one part of the following: 10 x 1 = 10

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a. A system is described by the following differential equation . Represent the system in the state space. 4x = u1(t)+3u2(t)+4u3(t) Y1 = 4 + 3u1 , Y2 = and outputs are + 4u2 +u3 b. Define state and state variable? What are the advantage of state space techniques? 4.Attempt any one part of the following: 10 x 1 = 10 a. Define stability? State the necessary conditions for system to be absolutely stable? b. What are the limitations of Routh Hurwitzcriterion? 5.Attempt any one part of the following: 10 x 1 = 10 a. The characteristics equation of a system is given by (s4+20s3+15s2+2s+k=0) , determine the range of the k, for system to stable. b. Construct the RL for a unity feedback system with OLTF G(s)= 6.Attempt any one part of the following: 10 x 1 = 10 a. Sketch the RL for a unity feedback system with OLTF G(s)= b. A unity feedback system shown in figure find the controller gain Kc and Kd so that the closed loop poles are placed at s=-15±j20. 7.Attempt any one part of the following: 10 x 1 = 10 a. A unity feedback system has an OLTF G(s)= .Find the static error constant and ess due to an input r(t)=t2u(t). b.Sketch the polar plot for (i) G(s)= the real and imaginary axes. (ii) G(s)= and find its points of intersection with