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Control Systems

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

 e-5s.
 e5s.
 1/(s-5).
 1/(s+5).

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Control Systems
Electrical analogous quantity for spring element (K) in force-voltage analogy is

 1/C
 C
 L
 R

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Control Systems
The poles of the second order system are at -3 ± j4. The damping ratio of the system is

 4/5
 3/5
 3/4
 3/7

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

 Zero.
 None of them.
 Infinite.
 One.

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Control Systems
With regard to filtering property, the lead compensator is

 bandpass filter
 high pass filter
 band reject filter
 low pass filter

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 both 1 and 3
 sin-1((1 - α)/(1 + α)
 tan-1((1 - α)/(2√α)
 cos-1((1 - α)/(1 + α)

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