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Control Systems

Control Systems
The Laplace transformation of f(t) is F(S) given the final value of f(t) is

 One.
 None of them.
 Zero.
 Infinite.

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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
 ∞ sec
 5 sec
 25 sec

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Control Systems
The input-output relationship of a linear time invariant continuous time system is given by r(t) = d²c(t)/dt² + 3 dc(t)/dt + 2 c(t) Where r(t) and c(t) are input and output respectively. What is the transfer function of the system equal to?

 2/(s² + s + 2)
 1/(s² + 3s + 2)
 2/(s² + 3s + 2)
 1/(s² + s + 2)

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Control Systems
The transfer function of a system is given as below, if a = 0.1, then the steady state error to unity ramp input will be

 0.16.
 0.49.
 0.35.
 0.25.

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Control Systems
The optimum values of damping ratio is --------------

 0.3 to 5
 0.3 to 0.7
 0.9 to 1.1
 0 to 2

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Control Systems
Electrical analogous quantity for dash-pot in force-current analogy is

 resistance.
 capacitance.
 inductance.
 conductance.

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