Control Systems
Time response for a second order system depends on the value of τ. If τ= 0 then the system is called as

  under damped system.
  critically damped system.
  undamped system.
  over damped system.

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Control Systems
Find the conditions for the system to be stable?

 Gain margin and phase margins are negative
 Gain margin and phase margins are positive
 Gain margin is negative but phase margin is positive
 Gain margin is positive but phase margin is negative

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