Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?

 S is not on root locus
 either 1 or 2
None of these
 S is on root locus

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

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

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