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Control Systems

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

 Both A and B.
 Inductor.
 Capacitor.
 Resistor.

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Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 0
 2
 1
 3

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Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 3 dB
 18 dB
 6 dB
 12 dB

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Control Systems
The DC gain of a system represented by the transfer function 12 / {( s + 2 )( s + 3 )} is

 5.
 10.
 2.
 1.

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

 marginally stable
 stable
 unstable
 critical stable

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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 the gain k is increased to infinity, then damping ratio will tend to become

 0.707
 infinite
 unity
 zero

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