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Control Systems

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
Which of the following is/are the advantages of a closed loop control system?

 both 1 and 2.
 The closed loop systems are accurate.
 nether 1 nor 2.
 The closed loop systems are less affected by noise.

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Control Systems
The characteristic equation of a control system is given below: The system is

 critical stable
 stable
 unstable
 marginally stable

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Control Systems
what is the Laplace transform of a function δ(t-2)?

 e-2s
 0
 2
 2s

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Control Systems
Which of the following controller is also known as anticipatory controller?

 proportional controller
 both 1 and 3
 integral controller
 derivative controller

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Control Systems
Negative feedback in a closed loop control system

 reduces sensitivity to parameter variation.
All of these
 reduces gain.
 improves disturbance rejection.

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