Differentiate between open loop and close loop system
[3 marks]For mechanical translational system. Write the analogous electrical elements in force voltage and force-current analogy.
[4 marks]Explain standard Test signals & derive equation of steady state e rror.
[7 marks]Define transfer function and Explain importance of Laplace transform in control system.
[3 marks]Explain following terms with necessary diagrams. (1) Delay Time (2) Rise Time (3) Peak Time (4) Steady state error
[4 marks]For the given mechanical system Write down differential equations, mechanical circuit diagram and obtain force-current analogy.
[7 marks]What is force voltage analogous system? Which are the analogues quantities according to this method?
[7 marks]State the limitation of Routh criterion and how these limitations are overcome by Root Locus.
[3 marks]Explain the mathematical model of thermal system.
[4 marks]Alinear feedback control system has the block diagram shown in Figure. Using block diagram reduction rules, obtain overall transfer function C(S)/R (S).1
[7 marks]Derive unit step response of a first order system.
[3 marks]By means of Routh criterion, determine the stability of the system described by characteristic equations. S4+8S3+18S2+16S+5=0 Comment on location of the roots.
[4 marks]For the signal flow graph shown in Figure, using Masson’s gain formula determine the overall transfer function C/ R.
[7 marks]Define pole, zero and order of a system.
[3 marks]Explain Performance Indices.
[4 marks]List all the rules to construct a root locus and explain.
[7 marks]Derive expression of K , K , Kfor Type ‘0’ control system P V A
[3 marks]Define and explain following terms with respect to frequency response (i) Gain Margin (ii) Phase Margin
[4 marks]Explain Sensitivity of Control Systems to Parameter Variations.
[7 marks]Define : 1) state variable, 2) state vector, 3) state space
[3 marks]With example explain the location of the roots of characteristics equation for the stable control system.
[4 marks]Sketch the root locus for the given open loop transfer function G(s)H(s)= K /s (s + 2)(s + 3)
[7 marks]Explain the Nyquist stability criterion.
[3 marks]Sketch polar plot for the system with open loop transfer function is G(s)H(s)= 1/(s + 4)(s + 2)
[4 marks]Sketch the Bode plot and determine the gain margin and phase margin for the given unity feedback control system. G(s)H(s)= k / s (1+0.02s)(1 + 0.04s).
[7 marks]