ISRO Electrical Engineering (EE) 2023 - Question 37

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An open loop transfer function of a unity feedback system is given by, G(s) = 1/(s + 2)^2. The closed loop poles are

  • A. -2, -2
  • B. -2, -1
  • C. -2 + j, -2 - j
  • D. -2, 2

Answer: C. -2 + j, -2 - j

Explanation: Closed loop characteristic equation 1 + G(s) = 0 has roots at s = -2 ± j.

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