Introduction to Control Systems 2

2. Which of the following are the characteristics of closed-loop systems ?
      1. it does not compensate for disturbances.
      2. it reduces the sensitivity of plant-parameter variations.
      3. it does not involve output measurements.
      4. it has the ability to control the system transient response.
Select the correct answer using the codes given below :

(a)  1 and 4
(b)  2 and 4
(c)  1 and 3
(d)  2 and 3

Answer : (b)

Explanation : No answer description available for this question. Let us discuss.

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