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Control Systems

Control Systems
First Foster form of a LC network represents which element in the beginning?

 Inductor.
 Both A and B.
 Capacitor.
 Resistor.

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Control Systems
The open loop transfer function of a unity feedback system is given by G(s) = 1/(s+2)². The closed loop transfer function will have poles at

 -2+j,-2-j
 -2,2
 -2,-2
 -2,-1

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Control Systems
The closed loop transfer function of a unity feedback control system is 9/(s² + 3s + 9), then the type of the system is

 3
 2
 1
 0

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Control Systems
Time taken by the response to reach and stay within a specified error is called

 Peak time.
 Raise time.
 Peak overshoot.
 Settling time.

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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

 infinite
 unity
 0.707
 zero

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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

 4 sec
 400 sec
 10 sec
 100 sec

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