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Control Systems

Control Systems
In a control system, an integrator is represented by

 1 / s2.
  s2.
  s.
  1 / s.

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Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are

 (-2,0)
 (2,0)
 (-1,0)
 (1,0)

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Control Systems
The open loop transfer function of a unity feedback control system is G(s) = 1/((s(s+0.1s)(s+1)). The value of damping factor for which the resonant peek is equal to 1.4 is

 0.707
 0.386
 0.263
 0.953

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Control Systems
Which of the following is the analogous quantity for mass element in force-voltage analogy?

 Capacitance.
All of these
 Inductance.
 Resistance.

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Control Systems
Time taken for the response to rise from zero to 100 % for very first time is called

 Settling time.
 Peak time.
 Delay time.
 Rise time.

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Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 2
 1
 4
 0.5

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