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Automatic Control Systems - Engineering

Q1:

In the given figure shows pole-zero plot. If steady state gain is 2 the transfer function G(s) is

A

B

C

D

ANS:A -

The zero at - 1 gives the term (s + 1) in the numerator. The poles at (- 2 + j1) and (- 2 - j1) give (s2 + 4s + 5) term is the denominator. Gain is 2.