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GATE Electrical 2014 Set 1 | Question: 18

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The root locus of a unity feedback system is shown in the figure

The closed loop transfer function of the system is

  1. $\dfrac{C(s)}{R(s)}=\dfrac{K}{(s+1)(s+2)} \\$
  2. $\dfrac{C(s)}{R(s)}=\dfrac{-K}{(s+1)(s+2)+K} \\$
  3. $\dfrac{C(s)}{R(s)}=\dfrac{K}{(s+1)(s+2)-K} \\$
  4. $\dfrac{C(s)}{R(s)}=\dfrac{K}{(s+1)(s+2)+K}$

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