Shivaji University 2010-5th Sem B.E Electrical Engineering T.E(Electrical)- (New ), Feedback Control Systems - Question Paper
This paper is of subject feedback control systems(FCS) for Dec 2010 for 3rd year electrical engineering students of Shivaji University, Kolhapur.
in n wen
Seat
1-156
No.
T.E. (Electrical) (Semester - V) (New Course) Examination, 2010 FEEDBACK CONTROL SYSTEMS
Day and Date : Friday, 3-12 -2010
Total Marks : 100
l ime : 10.00 a.m. lo 1.00 p.m.
Instructions: }) Write any three questions from each Section.
2) Neat diagrams must he drawn wherever necessary.
3) Figures to the right indicate full marks
4) Use of pocket calculator is allowed.
5) Assume suitable data if necessary.
SECTION -1
1. a) Compare open loop system and dosed loop systems and also explain simple
canonical form, 8
b) Reduce the given block diagram to its canonical form and hcncc obtain the
8
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equivalent transfer function, |
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2 a) Explain Time Response of under damped 2llcl order system and Transient
Response specification. S
b) Derive expressions of Trs Tp and Mp. J 0
4(s + 10s+ 100) s(s + 3) (s: + 2s +10)
b) For an unity fccdback system, output response is observed as C(l) 1 + 0.504e_3,07r- 1.504e 2!SL. Determine its damping ratio and natural frequency of oscillations of the system. Assume unit step input.
G(s) =
4. a) State and explain controllable canonical and observable canonical form b) Write a short notes on AC and DC servomotors.
SECTION - .11
5. p) Explain che rules for construction ofroot locus. 8 q) Sketch the root locus for the system having
G(s) H(s) 10
s(s + 2s + 2)
6. p) What should be values of GM and PM of a good system ? How to improve
CM and PM ? 6
q) A feedback system has G{s) II(s)= . Draw the bode plot and
s(s + 0.5)(s +10)
comment on stab i 1 Lty. 10
7. p) Classify the Non-linear system. Explain limit cyclc in phase plane method. 8 q) Explain die following terms :
i) Saturation
ii) Friction
iii) Dead zone
iv) Back-lash. 8
8. p) What are the advantages and limitations of Routh's criterion ? 8
q) For a system with characteristic equation
F(s) = s6 - 3s5 + 4s4 + 6s3 + 5s2 + 3s + 2 = 0, examine stability. 8
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Attachment: |
| Earning: Approval pending. |
