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Control Systems

Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 2
 1
 0
 4

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

 10 logξ
 -10 logξ
 -20 log2ξ
 20 log2ξ

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Control Systems
A controller transfer function is given by . What is its nature and parameter?

 lag compensator, β = 2
 lead compensator, α = 0.2
 lead compensator, α = 0.1
 lag compensator, β = 10

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Control Systems
Consider the following statements for phase lead compensation:

 The maximum phase lag occurs at the arithmetic mean of the two corner frequencies.
 Phase lead compensation shifts the gain crossover frequency to the right
 both 1 and 2
 nether 1 nor 2

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Control Systems
Settling time for 5% tolerance band is -------------

 2T.
 4T.
 5T.
 3T.

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Control Systems
The transfer function of a system given by The system is

 a critically damped.
 unstable.
 an under damped.
 an over damped.

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