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Control Systems

Control Systems
In a control system, an integrator is represented by

 1 / s2.
  1 / s.
  s.
  s2.

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Control Systems
In polar plots if the critical point '-1+j0' is enclosed then the system is --------

 critical stable
 stable
 unstable
 marginally stable

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Control Systems
The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is

 s/(s+1)
 1/(s+1)
 1/s(s+1)
 1/s

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Control Systems
Which one of the following is the steady state error for a step input applied to a unity feedback system with the open loop transfer function G(s) = 10/(s²+14s+50)?

 1
 infinite
 0
 0.83

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Control Systems
Lead network is used to

 both A and C.
 improve steady state response.
 improve transient response.
 increase bandwidth.

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Control Systems
The position and velocity error coefficient for the transfer function given below are respectively

 50 and infinity.
 50 and 0.
 0 and 0.
 0 and infinity.

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