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Control Systems

Control Systems
Which of the following is/are represents the lag compensator?

 both 1 and 2
 (s+2)/(s+1)
 (s+5)/(s+6)
 (s+2)/(s+5)

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Control Systems
Time response for a second order system depends on the value of τ. If τ= 0 then the system is called as

  critically damped system.
  undamped system.
  over damped system.
  under damped system.

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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

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

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Control Systems
Time response for a second order control system depends on value of ξ. If ξ>1 then the system is called as

 over damped system.
 critically damped system.
 undamped system .
 under damped system.

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Control Systems
The maximum phase lag occurs at the ------------------- of the two corner frequencies?

 geometric mean
None of these
 either 1 or 2
 arithmetic mean

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Control Systems
Which one of the following is the response y(t) of a casual LTI system described by H(s) = (s+1)/(s²+2s+2) for a given input x(t) = e-t u(t)?

 e-t cott*u(t)
 e-t tant*u(t)
 e-t cost*u(t)
 e-t sint*u(t)

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