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Control Systems

Control Systems
For type 1 system with parabolic input, the steady state error is

 infinite.
 zero.
 finite constant.
 indeterminate.

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Control Systems
The magnitude condition for root locus is ..................

 |G(s)H(s)| = 2
 |G(s)H(s)| = ∞
 |G(s)H(s)| = 0
 |G(s)H(s)| = 1

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Control Systems
A lead compensator used for a closed loop controller has the following transfer function For such a lead compensator

 b < a.
 a < kb.
 a < b.
 a > kb.

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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
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 critical damped
 Over damped
 under damped
 un damped

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Control Systems
Find the relation of damped natural frequency (ωd)

 (ωn) √(1-4ζ²)
 (ωn) √(1-ζ²)
 (ωn) √(1-2ζ²)
 (ωn) √(1-1/ζ²)

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