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Control Systems

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

 1 / s2.
  s2.
  s.
  1 / s.

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Control Systems
Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to

 F(s+a)
 F(s)/(s+a)
 eas*F(s)
 e-as*F(s)

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Control Systems
A second order system has peak over shoot = 50% and period of oscillations 0.2 seconds. Find the resonant frequency?

 31.41 rad/s
 29.74 ra/s
 32.16 rad/s
 30.63 rad/s

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Control Systems
Consider the function F(s) = ω/(s²+ω²). Where F(s) = Laplace transform of f(t). The final value of f(t) is equal to

 a value between -1 and +1
 finite constant
 infinite
 zero

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Control Systems
The type number of the control system with G(s) = k(s+2)/(s(s²+2s+3) is

 1
 3
 0
 2

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Control Systems
A negative feedback closed loop control system is supplied to an input of 5 volt. The system has a forward gain of 1 and a feedback gain of 1. What is the output voltage?

 1.5 Volt.
 2.0 Volt.
  1.0 Volt.
  2.5 Volt.

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