Control Systems
A transfer function is given as The steady state sinusoidal response will become zero at a frequency response of

 2 rad/s
 3 rad/s
 4 rad/s
 9 rad/s

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Control Systems
In the integral control of the single area system frequency error is reduced to zero. Then

 integrator o/p decreases and speed changer position comes down.
 integrator o/p increases but speed changer position comes down.
  integrator output and speed changer position attain a constant value.
 integrator o/p decreases but speed changer position moves up.

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