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Control Systems

Control Systems
A control system has open loop transfer function G(s) = k/(s(s + 2). Find the break away point?

 -1
 -2
 1
 2

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Control Systems
A transfer function is given as The steady state sinusoidal response will become zero at a frequency response of

 9 rad/s
 3 rad/s
 2 rad/s
 4 rad/s

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Control Systems
The transfer function of a phase lead compensator is given by: G(s) = (1 + 3Ts)/(1 + Ts) where T>0. What is the maximum phase shift provided by such a compensator?

 60°
 90°
 45°
 30°

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Control Systems
Adding a pole to a system transfer function in terms of compensator represents a --------------- compensator ?

 lead
 lag
 lag-lead
 lead-lag

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Control Systems
A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is

 -90°
 180°
 -180°
 90°

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Control Systems
Consider the function F(s) = ω/(s²+ω²). Where F(s) = Laplace transform of f(t). The final value of f(t) is equal to

 zero
 infinite
 a value between -1 and +1
 finite constant

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