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Control Systems

Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 8
 2
 4
 6

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Control Systems
The DC gain of a system represented by the transfer function 12 / {( s + 2 )( s + 3 )} is

 1.
 5.
 10.
 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 III
 TYPE 0
 TYPE II
 TYPE I

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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

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

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Control Systems
Name test signals used in time response analysis?

  Unit step.
  Impulse.
  Unit ramp.
  All of B, C, D.

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Control Systems
Find the relation of damped natural frequency (ωd)

 (ωn) √(1-ζ²)
 (ωn) √(1-2ζ²)
 (ωn) √(1-1/ζ²)
 (ωn) √(1-4ζ²)

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