Control Systems
The initial slope of Bode plot for a transfer function having no poles at the origin is

 -20dB/decade.
 +10dB/decade.
 -10dB/decade.
 0 dB/decade

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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 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.
 integrator o/p decreases and speed changer position comes down.

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