Control Systems
Which of the following is the correct expression for the transfer function of an electrical RC phase lag compensating network?

 RCS/(1+RCS)
 RC/(1+RCS)
 1/(1+RCS)
 C/(1+RCS)

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

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

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Control Systems
When deriving the transfer function of linear element

 initial conditions are assumed to be zero and the element is assumed to be not loaded.
 initial conditions are assumed to be zero but loading is taken into account.
 both initial conditions and loading are taken into account.
 initial conditions are taken into account but the element is assumed to be not loaded.

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