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Control Systems

Control Systems
Find the Laplace transform for sinωt?

 s/(s²+ω²)
 1/s²
 1/s
 ω/(s²+ω²)

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Control Systems
A system is stable for (where GM = Gain Margin and PM = Phase Margin):

 GM -ve.
 GM and PM both +ve.
 PM - ve.
 GM and PM both -ve.

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Control Systems
A function of one or more variables which conveys information about the nature of physical phenomenon is called

 noise.
 interference.
 signal.
 system.

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Control Systems
The phase margin of a system having the loop transfer function G(s)H(s) = 2√3/s(s+1) is

 60°
 45°
 30°
 80°

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

 e5s.
 1/(s+5).
 1/(s-5).
 e-5s.

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Control Systems
Find the order of a system given by

 2.
 5.
 4.
 3.

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