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Control Systems

Control Systems
Which of the following is/are represents the lead compensator?

 (s+5)/(s+6)
 both 2 and 3
 (s+2)/(s+1)
 (s+2)/(s+5)

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Control Systems
Find the type of the system given by

 4.
 3.
 2.
 1.

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Control Systems
The characteristic equation of a control system is give by s(s + 4)(s² + 2s + 1) + k(s + 1) = 0. Find the angle between the asymptotes?

 120°
 60°
 360°
 180°

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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively

 0.25 and 2 rad/s
 0.50 and 2 rad/s
 0.50 and 4 rad/s
 0.25 and 4 rad/s

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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?

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

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

 -20 log2ξ
 -10 logξ
 10 logξ
 20 log2ξ

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