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Control Systems

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

  1 / s.
 1 / s2.
  s.
  s2.

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Control Systems
A proportional plus derivative controller

 increases the stability of the system
 both 1 and 2
 improves the steady state accuracy
 has high sensitivity

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Control Systems
A second order control system has F(jω) = 100/(100 - ω² + 10√2 jω). Find the resonant peak?

 1.5
 0.5
 0.707
 1

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Control Systems
A transfer function has a zero at s = -1 and poles at s = -1 ± j1. The multiplier being unity, if the input is step function, the steady state response is given by

 1∠0°
 0.5∠0°
 2∠90°
 0.5∠10°

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Control Systems
First Foster form of a LC network represents which element in the beginning?

 Inductor.
 Both A and B.
 Capacitor.
 Resistor.

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Control Systems
The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the final value?

 1
 3/5
 0
 1/4

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