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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°
45°
30°
90°
60°
45°
30°
90°
Answer
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Related Question
Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?
oscillatory
stable
critically stable
unstable
oscillatory
stable
critically stable
unstable
Answer
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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its open loop transfer function is
(2s+2)/(s+1)²
(2s+2)/s²
(2s+1)/s²
(2s+1)/(s+1)²
(2s+2)/(s+1)²
(2s+2)/s²
(2s+1)/s²
(2s+1)/(s+1)²
Answer
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Control Systems
The system is initially critical damped. If the gain of the system is doubled, then it will exhibit
critical damped characteristics.
over damped characteristics.
undamped characteristics.
under damped characteristics.
critical damped characteristics.
over damped characteristics.
undamped characteristics.
under damped characteristics.
Answer
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Control Systems
The closed loop transfer function of a system is 25/(s² + 25). The settling time of the system is
∞ sec
25 sec
1 sec
5 sec
∞ sec
25 sec
1 sec
5 sec
Answer
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Control Systems
The transfer function of the system described by d²/dt²(y(t)) + 3d/dt(y(t)) + 2y(t) = 5u(t) with u(t) as input and y(t) as output is
s(s²+3s+2)/5
5/(s²+3s+2)
(s²+3s+2)/5
5/s(s²+3s+2)
s(s²+3s+2)/5
5/(s²+3s+2)
(s²+3s+2)/5
5/s(s²+3s+2)
Answer
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