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Control Systems

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

  1 / s.
  s2.
  s.
 1 / s2.

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Control Systems
The transfer function of the system described by d²/dt²(y(t)) + 3d/dt(y(t)) + 2y(t) = 5u(t) with u(t) as input and y(t) as output is

 5/(s²+3s+2)
 5/s(s²+3s+2)
 (s²+3s+2)/5
 s(s²+3s+2)/5

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Control Systems
The open loop transfer function of a unity feedback control system is G(s) = 1/((s(s+0.1s)(s+1)). The value of damping factor for which the resonant peek is equal to 1.4 is

 0.263
 0.953
 0.386
 0.707

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Control Systems
For type 1 system with parabolic input, the steady state error is

 finite constant.
 infinite.
 zero.
 indeterminate.

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Control Systems
The transfer function of a plant is T(s) = 5/(s+5)(s² + 5 + 1). The second order approximation of T(s) using dominant pole concept is

 5/(s+1)(s+5)
 1/(s+1)(s+5)
 1/(s² + 5 + 1)
 5/(s² + 5 + 1)

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Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 6 dB
 12 dB
 18 dB
 3 dB

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