Explain green engineering with suitable example.
[3 marks]What is transfer function? Discuss properties, advantages, and disadvantages of it.
[4 marks]What is control system? What are the different types of control systems? Compare open loop and closed-loop control system.
[7 marks]Find Laplace transform of unit step and impulse signal.
[3 marks]Compare Block diagram and Signal flow graph methods.
[4 marks]Draw the equivalent mechanical system of the system shown in figure.1. Write the set of equilibrium equations for it and obtain electrical analogous circuits using i) F-Vanalogy ii) F-Ianalogy
[7 marks]What is an analogous system? Establish force-current and force-voltage analogy.
[7 marks]Derive transfer function of field-controlled dc motor.
[3 marks]Discuss standard Test signals used in control system.
[4 marks]For the block diagram of figure.2, derive the open-loop and closed-loop transfer function by block diagram reduction technique.
[7 marks]Define: Frequency response, Root locus, Centroid.
[3 marks]Derive the expression for peak time Tp for a second order control system subjected to a unit step input.
[4 marks]Obtain the overall transfer function using Mason’s gain formula for the signal flow graph shown in Figure.3.
[7 marks]Explain bounded input bounded output (BIBO) stability.
[3 marks]Define: (i) State (ii) State Variable (iii) State Vector.
[4 marks]Sketch the root locus and determine the value of Kfor marginal stability. G(s) = K / s (s+1) (s + 3).
[7 marks]What is Performance index? Define various performance indices for closed loop control system.
[3 marks]Derive expression of K , K , Kfor Type ‘0’ control system. P V A
[4 marks]The characteristic equation of a system is given by S6+3S5+5S4 + 9S3 + 8S2 + 6S + 4 = 0. Investigate the stability of a system by means Routh-Hurwitz criterion.1
[7 marks]Derive unit step response of a first order system.
[3 marks]Define the following terms 1) Gain cross over frequency 2) Phase cross over frequency 3) Gain Margin 4) Phase Margin.
[4 marks]Sketch Bode plot of a unity feedback control system having transfer function, G(s) = 100(s+3) / s(s+1) (s+5).
[7 marks]Discuss Nyquist stability criterion.
[3 marks]Sketch polar plot for the system with transfer function G(s)H(s)= 10/s (s + 2).
[4 marks]Describe correlation between transfer function and state-space equations with suitable example. . Figure.32
[7 marks]