Differentiate between open loop and close loop system.
[3 marks]Explain Green engineering with suitable example.
[4 marks]What is analogous system? Explain Force-Voltage and Force-Current Analogy with suitable Example.
[7 marks]Write mason’s gain formula.
[3 marks]Define transfer function and Explain importance of Laplace transform in control system.
[4 marks]Using Block Diagram reduction technique, find closed loop transfer function of system shown in figure.
[7 marks]Find the mathematical model and write differential equations of the mechanical network shown in figure.
[7 marks]Mention difference between transfer function approach and state space approach.
[3 marks]Explain standard test signals.
[4 marks]Using Mason Gain formula find the transfer function for the following system1
[7 marks]Define the following terms: (1) Type of a system (2) BIBO stability (3) Time constant.
[3 marks]Obtain the state transition matrix eAtfor the state model whose system matrix is given by 0 −3 A= [ ] 1 −4
[4 marks]By means of Routh criterion, determine the stability of the system represented by the characteristic equation. S6 + 2S5+ 8S4 + 12S3 +20S2 +16S+ 16 = 0
[7 marks]What is Performance index? Define various performance indices for closed loop control system.
[3 marks]State the properties of state transition matrix.
[4 marks]Sketch the root locus of a unity feedback control system with G(S) = K /S(S+1)(S+3) and determine the value of k for marginal stability.
[7 marks]Find error constant and steady state error for type-1 system for unit step input.
[3 marks]For the system G=25/S2+4S+25, find the natural frequency, damping ratio. Depending on the damping ratio, describe the system.
[4 marks]Sketch the root locus of given system having unity feedback. G(S) = K/S(S +1)(S + 4) Find the value of gain Kat s = -1± 2j.
[7 marks]Explain Gain margin and Phase margin.
[3 marks]Draw unit step response of a second order control systems. Describe all specification in detail.
[4 marks]Consider an open loop transfer function G(s)H(s)=1/(s+2)(s+4) Draw the Nyquist plot and comment on the stability of the system.
[7 marks]Explain the Nyquist stability criterion.
[3 marks]Explain Gain Crossover frequency and Phase Crossover frequency.
[4 marks]Draw the Bode plot for a system having G(S) H(s) = 100/ s(s + 1)(s + 2) Find Gain margin, Phase margin.
[7 marks]