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Control Systems

Control Systems
Based on relation between the arm impedances the filters can be categorized into how many types?

  2.
 Not classified at all.
 3.
 4.

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Control Systems
A unity feed back system has forward transfer function The range of k for the system to be stable is

 0 < k < 390.
 0 < k < 3900.
None of these
 0 < k < 39.

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Control Systems
A unity feedback control system has an open loop transfer function G(s) = k/(s(s² + 7s + 12) The gain k for which s = -1 + j1 will lie on the root locus of the system is

 5
 6.5
 4
 10

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Control Systems
The closed loop transfer function of a system is 25/(s² + 25). The settling time of the system is

 1 sec
 25 sec
 ∞ sec
 5 sec

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Control Systems
Find the relation of damped natural frequency (ωd)

 (ωn) √(1-1/ζ²)
 (ωn) √(1-4ζ²)
 (ωn) √(1-ζ²)
 (ωn) √(1-2ζ²)

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Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?

 S is not on root locus
 either 1 or 2
 S is on root locus
None of these

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