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Control Systems

Control Systems
For a lead compensator, the poles lie:

  on LHS before zero.
  on origin.
  on RHS.
  on LHS.

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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 initial value?

 3/9
 3/5
 0
 1/4

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

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

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Control Systems
The phase margin of a system having the loop transfer function G(s)H(s) = 2√3/s(s+1) is

 80°
 30°
 45°
 60°

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Control Systems
Error constants of a system are a measure of

 relative stability.
 steady state response.
 steady state response as well as transient state response.
 transient state response.

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Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 critical damped
 under damped
 Over damped
 un damped

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