B E1131 Pages: 3

Reg No.:_ Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION(S), MAY 2019
Course Code: EE303
Course Name: LINEAR CONTROL SYSTEMS

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries5 marks. Marks
1 Define transfer function and derive the transfer function of an RC network. (5)
2 (5)

With the help of a neat diagram, explain the various time domain specifications.

9 The open loop transfer function of a unity feedback system is (5)

9

(5+ 1) Using dynamic error coefficients, find an expression for an error if the
input r (t) = 1 + 21 41.5 2,

4 The open loop transfer function of a unity feedback system is (5)
‏اع‎
‎5-4
‎Find the closed loop poles when k = 0, 1, 2, 3.....10 and mark it on the s- plane.
Hence draw the root locus of the system.
5 Explain Gain margin and Phase margin with the help of bode plot. Mark gain (5)
crosses over frequency and phase cross over frequency.
6 With the help of suitable figure explain frequency domain specifications? (5)
7 Give two examples of non-minimum phase transfer function. Explain why they (5)
are called non-minimum phase system?
8 Give a physical example of transportation lag. How can it be represented? (5)

PART 13
Answer any two full questions, each carries 10 marks.

Page 1 of 3