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Control Systems

Control Systems
Given a unity feedback system with G(s) = k/s(s+4), the value of k for damping ratio of 0.5 is

 4
 16
 1
 64

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Control Systems
Time response for a second order system depends on the value of τ. If τ= 0 then the system is called as

  critically damped system.
  under damped system.
  undamped system.
  over damped system.

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Control Systems
Find the order of a system given by

 3.
 2.
 5.
 4.

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

None of these
 Inaccurate.
 Unreliable.
 both 1 and 2.

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Control Systems
The characteristic equation of a control system is given below: The system is

 unstable
 marginally stable
 critical stable
 stable

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Control Systems
The initial slope of Bode plot for a transfer function having no poles at the origin is

 -20dB/decade.
 +10dB/decade.
 -10dB/decade.
 0 dB/decade

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