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Control Systems

Control Systems
The Laplace transform of a transportation lag of 5 seconds is

 1/(s-5).
 1/(s+5).
 e5s.
 e-5s.

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Control Systems
A system of constant voltage and constant frequency is called _________________ system.

  infinite.
  zero.
None of these
  feedback.

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Control Systems
A proportional plus derivative controller

 increases the stability of the system
 improves the steady state accuracy
 both 1 and 2
 has high sensitivity

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Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 0
 2
 1
 4

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Control Systems
The open loop transfer function of a unity feedback control system is G(s) = 1/((s(s+0.1s)(s+1)). The value of damping factor for which the resonant peek is equal to 1.4 is

 0.263
 0.707
 0.386
 0.953

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Control Systems
Error constants of a system are a measure of

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

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