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Control Systems

Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 2
 3
 1
 0

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Control Systems
In signal flow graph input node is node having only------------

 outgoing branches.
None of these
 both 1 and 2.
 incoming branches.

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Control Systems
With regard to filtering property, the lead compensator is

 bandpass filter
 high pass filter
 band reject filter
 low pass filter

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

 2
 8
 6
 4

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Control Systems
The transfer function of a system is G(s) = 100/((s+1)(s+100)). For unit step input to the system the approximate settling time for 2% criterion is

 100 sec
 10 sec
 4 sec
 400 sec

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Control Systems
Lead network is used to

 increase bandwidth.
 both A and C.
 improve transient response.
 improve steady state response.

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