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Control Systems

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

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

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Control Systems
Transfer function of zero order hold response is

 (1 / s) × e-st.
 (1 / s) × (1 - est).
 (s) × (1 - est).
 (1 / s) × (1 - e-st).

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Control Systems
A ramp input applied to an unity feedback system results in 5% steady state error. The type number of the system is...........?

 3
 1
 5
 2

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Control Systems
Find the stability for the following transfer function G(s) = 50/s(s+5) ?

 Critically stable
 Marginally stable
 Unstable
 Stable

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Control Systems
For a unity feedback control system open loop transfer function then position error constant is

 infinity.
 0.
 40.
 20.

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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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