Control Systems
Transfer function of a control system depends on

 nature of input.
 system parameters alone.
 initial conditions of input and output.
 nature of output.

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

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