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Control Systems

Control Systems
Resonant peak of a marginally stable system is

 finite value
 0
 infinite
 any of the above

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Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

None of these
 B *x
 B d2x/dt2
 B dx/dt

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Control Systems
A control system has open loop transfer function G(s) = k/(s(s + 2). Find the break away point?

 -2
 1
 -1
 2

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Control Systems
In frequency response analysis of second order system, the error at corner frequency is

 20 log2ξ
 -20 log2ξ
 -10 logξ
 10 logξ

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

 e5s.
 e-5s.
 1/(s-5).
 1/(s+5).

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Control Systems
The value of gain margin of the system having G ( s )H ( s ) = 8 / ( s + 2 )3 is

 2.
 4.
  8.
 6.

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