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Control systems miscellaneous

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Control systems miscellaneous
  1. The transfer function of the system
    K
    s2 (1 + sT)
    is operated in open loop mode. The system is—
    1. Stable
    2. Unstable
    3. Conditionally stable
    4. Marginally stable
Correct Option: B

Because there are two poles at origin. If a transfer function has two poles at origin then the system is unstable.


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