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Control Systems

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

  s2.
 1 / s2.
  1 / s.
  s.

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Control Systems
When the polynomial is Routh Hurwitz,

 none of these.
 the roots of function have real parts which are to be zero/negative.
 the function is not real.
 all zeroes lie in the right half of the s-plane.

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Control Systems
A linear time invariant system, initially at rest when subjected to a unit step input gave response c(t) = te-t (t ≥ 0). The transfer function of the system is

 s/(s+1)
 1/s(s+1)2
 s/(s+1)2
 (s+1)2/s

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Control Systems
With regard to filtering property, the lead compensator is

 low pass filter
 high pass filter
 bandpass filter
 band reject filter

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Control Systems
By using which of the following elements, mechanical translational systems are obtained?

 dash-pot
All of these
 mass element
 spring element

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Control Systems
When compared to a 1st order LPF, a 2nd order LPF has

 higher voltage gain.
 lower voltage gain.
 higher cut off frequency.
 faster drop in filter response.

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