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Control Systems

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

 0.
 infinity.
 40.
 20.

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Control Systems
The transfer function of a plant is T(s) = 5/(s+5)(s² + 5 + 1). The second order approximation of T(s) using dominant pole concept is

 1/(s+1)(s+5)
 5/(s² + 5 + 1)
 5/(s+1)(s+5)
 1/(s² + 5 + 1)

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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
In the cauer-2 form of LC network---------is series element and --------is shunt element respectively?

 L and L
 L and C
 C and L
 C and C

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Control Systems
A second order control system has a transfer function 16/(s² + 4s + 16). What is the time for the first overshoot?

 2π/√3 sec
 π/2√3 sec
 π/√3 sec
 π/4√3 sec

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Control Systems
The magnitude of a transfer function G(jω)H(jω) at gain cross over frequency is

 0
 infinity
 1
 any of the above

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