Control Systems
Which of the following statements is/are true?

 both 1 and 2
 Centroid may not be a part of root locus
 Centroid may be a part of root locus
 nether 1 nor 2

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

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

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