Shivaji University 2009-5th Sem B.E Electrical Engineering T.E(Electrical)- (New ), Feedback Control Systems - Question Paper

This is 3rd year electrical engineering students fifth semester paper of 'feedback control systems' paper for the year Dec 2009.

Y,E, (Electrical) (Semester - Y) (New Coarse) Examination, 2009 FEEDBACK CONTROL SYSTEMS

Day and Date ; Thursday, 3-12-2(X)9    Total Marks; ; (X)

Time ; 1030 fi.m, to 1.30par*.

; I) Solve any three questions from Section / and any three questions from Section 11-

2)    Assume suitble data wherever necessary

3)    Figures to the righi indicate full marks.

SECI'fON-I

i. ?_t) Obtain ihc transfer friction H_ti{s}/Ejfs) for the circuit shown, in Fig.L    8

L> (>)
R-i

b) With suk&bte example sta Le anti explain Mason gaia formula for S i^?.G. 8

2. Obiaia rhe uiiisferfimcEioR of a sysseni shown in fig. 2    18

i\) Deersniiic Ike values of w and y so that the max i muni overshoot i i\ unk seep response is 25% and the peak time is 2 see*.

Qs) _____

R{*>) S² -r 2W' S -r W,,~ *

b) For a dost*] loop eorurol .systeni.

C{s) G(s)

R(s) UG(s)

Pimi

a)    Sieacly s.talc error.

b)    Static posit.io.n error em'iStanL k_{).

c)    S ta t.i c ve e oc \ y error c onss wn L k,.

a)    Obuvin the iransfer ftinc&or* of field controlled D.C. scn'oechajiism.

b)    Draw aneai schenrt&de of hydraulic PI controller nci obtain is.s Transfer funcdo.ii.

SECTION- II

a)    Obtain the unit mr;.p response of a system defined by, j x.s j j 0 H | x, | _ j 0]

1 *2 I \ ""  j s U j X i

v = !l 0 1 !

[X₂j

b)    For the following characteristic equation s⁴ r ks^Jt s" - s f I - 0 determine the range of k for stability

6. For a ium\ feedback closed .loop system with open loop iransfer function as

G(s)

s{s-rJ.){s2) the k¹ is nor* negative Sketch the root locus pioL

7. a) The transfer .faction of a svsiein is G (s} ;;;......... Obtain the steady siase

r.., _s

output > (0 if lop u? x(0 - X sin WL.

b) Obmin the phase and gain margins of a sysr.au shown In fig3 .for k - 10, arjii k-I(K).    10

S. Siace and cxpiam eomraon physical no.n-1 hiearities present in control systems. 16

Attachment: shivaji-university-2009-b-e-electrical-engineering-34939-1.pdf

Earning:   Approval pending.