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

ANSWER DOWNLOAD EXAMIANS APP

Control Systems
For a transfer function H (s) = P(s) / Q(s), where P (s) and Q (s) are polynomials in s. Then

 the degree of P (s) is always greater than the degree of Q (s).
 the degree of P (s) and Q (s) are same.
  degree of P (s) is independent of degree of Q (s).
 maximum degree of P (s) and Q (s) differ at most by one.

ANSWER DOWNLOAD EXAMIANS APP