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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
5/(s+1)(s+5)
1/(s+1)(s+5)
1/(s² + 5 + 1)
5/(s² + 5 + 1)
5/(s+1)(s+5)
1/(s+1)(s+5)
1/(s² + 5 + 1)
5/(s² + 5 + 1)
Answer
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Related Question
Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be
un damped
Over damped
under damped
critical damped
un damped
Over damped
under damped
critical damped
Answer
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Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback
0
2
3
1
0
2
3
1
Answer
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Control Systems
The poles of the second order system are at -3 ± j4. The damping ratio of the system is
3/7
3/5
3/4
4/5
3/7
3/5
3/4
4/5
Answer
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Control Systems
Which of the following represents the value of resonant frequency (ωr)?
(ωn) √(1-2ζ²)
(ωn) √(1-ζ²/2)
2*(ωn) √(1-ζ²)
(ωn) √(1-ζ²)
(ωn) √(1-2ζ²)
(ωn) √(1-ζ²/2)
2*(ωn) √(1-ζ²)
(ωn) √(1-ζ²)
Answer
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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
under damped system.
over damped system.
undamped system.
critically damped system.
under damped system.
over damped system.
undamped system.
critically damped system.
Answer
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