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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

 16
 4
 64
 1

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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become

 0.707
 zero
 infinite
 unity

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Control Systems
If the bandwidth of the system is very large, the system response is

None of these
 slower
 independent of bandwidth
 faster

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Control Systems
Settling time for 5% tolerance band is -------------

 5T.
 4T.
 2T.
 3T.

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Control Systems
Open loop transfer function,

 band reject filter.
 band stop filter.
None of these
 all pass filter.

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Control Systems
Time response for a second order system depends on value of ξ. If ξ = 1 then the system is called as

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

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