Control Systems
Which of the following represents the value of resonant frequency (ωr)?

 2*(ωn) √(1-ζ²)
 (ωn) √(1-ζ²)
 (ωn) √(1-2ζ²)
 (ωn) √(1-ζ²/2)

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Control Systems
What is the full form of SPICE ?

 Stimulated program with integrated circuit arrangement.
  Simulated program with integrated circuit analysis.
 Sequential program with integrated circuit analysis.
 None of these.

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