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Control Systems

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

 3 dB
 18 dB
 12 dB
 6 dB

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Control Systems
None of the poles of a linear control system lie in the right half of s plane. For a bounded input, the output of this system

  none of these.
  could be unbounded.
  always bounded.
  tends to zero.

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Control Systems
Number of roots in left hand half of s plane if characteristic equation is s3 - 4s2 + s + 6 = 0 ?

 2.
 1.
 0.
 3.

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Control Systems
The output of the system has an effect upon the input quantity, then the system is a

 open loop control system.
 closed loop control system.
None of these
 either 1 or 2.

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Control Systems
Transient response is improved in case of

 lead network.
 lag network.
 both A and B.
 none of these.

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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
 2π/√3 sec
 π/4√3 sec
 π/2√3 sec

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