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The damping ratio and undamped natural frequency of a closed loop system as shown in the figure, are denoted as $\zeta$ and $\omega_{n}$, respectively. The values of $\zeta$ and $\omega_{n}$ are

  1. $\zeta = 0.5$ and $\omega _{n} =10$ rad/s
  2. $\zeta = 0.1$ and $\omega _{n} =10$ rad/s
  3. $\zeta = 0.707$ and $\omega _{n} =10$ rad/s
  4. $\zeta = 0.707$ and $\omega _{n} =100$ rad/s
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