Control Systems
A controller transfer function is given by . What is its nature and parameter?

 lag compensator, β = 10
 lag compensator, β = 2
 lead compensator, α = 0.1
 lead compensator, α = 0.2

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

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

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