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Control Systems

Control Systems
The type number of the control system with G(s) = k(s+2)/(s(s²+2s+3) is

 0
 3
 2
 1

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Control Systems
Which of the following represents the value of resonant frequency (ωr)?

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

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Control Systems
A proportional plus integral controller

 increases the stability of the system
 it increases rise time
 both 2 and 3
 has high sensitivity

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

 5T.
 2T.
 4T.
 3T.

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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
If the bandwidth of the system is very large, the system response is

 independent of bandwidth
 faster
None of these
 slower

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