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03000CH302052002

PART ‏تا‎
‎Answer any two full questions, each carries 15 marks.
What are the different types of controllers used in the chemical industry to control
the controlled variable. Obtain its transfer functions. (5)
Compare the response of a typical control system while using different mode of
controllers. (3)

Obtain the response of unity feedback servo type system whose open loop transfer

function is G(s) = and when the input is unit step.

s(s+5)
ലഖ്‌

| ച + +

6५/७९

Determine the transfer function Y(s)/X(s) for the block diagrams shown above.
Express the result in terms of Gc, Gv and Gp.

Describe on the following

i. Stability of the system
11. Characterestic equation
111, Routh stability criterion

Construct Routh array and determine the stability of the system represented by the
characteristic equation, 957 - 2054 + 1053 — 52 - 9s - 10 = 0. Comment on

the location of roots of characteristic equation.

K(s+2)
5242542.

A unity feedback control system has an open loop transfer function G =

Sketch the root locus.
Write the transfer function of transportation lag and discuss its effect on root locus
diagram.
PART C
Answer any two full questions, each carries 20 marks.
The open loop transfer function of a feedback system is given by

(0.55+1)९- 0.15

G(s) = s(5s+1)

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