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Control Systems

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

 infinity.
 40.
 20.
 0.

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Control Systems
Certain control system has input u(t) and output c(t). If the input is first passed through a block having transfer function e-s and unit gain is applied to the applied to the system. The modified output will be

 c(t).u(t-1)
 c(t-1).u(t-1)
 c(t)u(t)
 c(t-1).u(t)

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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
 5
 2
 1

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Control Systems
Consider the function F(s) = ω/(s²+ω²). Where F(s) = Laplace transform of f(t). The final value of f(t) is equal to

 infinite
 a value between -1 and +1
 zero
 finite constant

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Control Systems
The compensator would provide a maximum phase shift of

 60o.
 45o.
 30o.
 20o.

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Control Systems
Time response for a second order system depends on value of ξ. If ξ = 1 then the system is called as

 undamped system.
 over damped system.
 critically damped system.
 under damped system.

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