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2003 Course Control System - II

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Total No. of Questions : 12] [Total No. of Pages :5 P1274 [3864] - 224 B.E. (Electrical) CONTROL SYSTEM - II (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to the two sections should be written in separate books. 2) Neat diagrams must be drawn wherever necessary. 3) Figures to the right indicate full marks. 4) Your answers will be valued as a whole. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) Compare the state space technique with the transfer function method for [8] the analysis of feedback control systems. b) Obtain state space representation in phase variable form for a system described by (Draw block diagram also) [10] Y(s) s+2 =3 U(s) s + 3s 2 + 4s + 5 OR Q2) A D.C. motor position control system is described by the following differential equations V - Eb = IaRa + L dI a dt T = KmIa; T = J dw + B w; Eb = Kb w dt d = angular velocity dt Ia = Armature current V = Armature voltage; Eb = Back emf Km = Motor torque constant; Kb = Back emf constant J = Rotor inertia; B = frictional constant. Where w = P.T.O.

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