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Control Systems

Control Systems
The optimum values of damping ratio is --------------

 0.3 to 0.7
 0.3 to 5
 0.9 to 1.1
 0 to 2

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

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

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Control Systems
A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is

 -180°
 90°
 -90°
 180°

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Control Systems
The low frequency and high frequency asymptotes of Bode magnitude plot are respectively -60dB/decade and -40dB/decade. What is the type of the system?

 TYPE 0
 TYPE I
 TYPE III
 TYPE II

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Control Systems
The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is

 3.
 0.
 2.
 4.

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Control Systems
Find the order of a system given by

 2.
 4.
 5.
 3.

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