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Control Systems

Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 18 dB
 12 dB
 3 dB
 6 dB

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Control Systems
Adding a pole to a system transfer function in terms of compensator represents a --------------- compensator ?

 lead-lag
 lag-lead
 lag
 lead

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Control Systems
The input-output relationship of a linear time invariant continuous time system is given by r(t) = d²c(t)/dt² + 3 dc(t)/dt + 2 c(t) Where r(t) and c(t) are input and output respectively. What is the transfer function of the system equal to?

 1/(s² + s + 2)
 2/(s² + 3s + 2)
 2/(s² + s + 2)
 1/(s² + 3s + 2)

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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 I
 TYPE II
 TYPE III
 TYPE 0

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Control Systems
The characteristic equation of a control system is given by What are the angles of asymptotes of the root loci for k ≥ 0?

 120°, 180°, 240°
 0°, 120°, 240°
 0°, 180°, 300°
 60°, 180°, 300°

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Control Systems
If a body has identical properties all over, it is known as

 elastic.
 homogeneous.
 none of them.
 isotropic.

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