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Control Systems
Error at corner frequency ωcf of first order control system is -------
±3 db
±1 db
±2 db
±4 db
±3 db
±1 db
±2 db
±4 db
Answer
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Related Question
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/s(s²+3s+2)
(s²+3s+2)/5
5/(s²+3s+2)
s(s²+3s+2)/5
5/s(s²+3s+2)
(s²+3s+2)/5
5/(s²+3s+2)
Answer
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Control Systems
Transfer function of a control system depends on
system parameters alone.
nature of input.
nature of output.
initial conditions of input and output.
system parameters alone.
nature of input.
nature of output.
initial conditions of input and output.
Answer
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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively
0.25 and 4 rad/s
0.50 and 4 rad/s
0.25 and 2 rad/s
0.50 and 2 rad/s
0.25 and 4 rad/s
0.50 and 4 rad/s
0.25 and 2 rad/s
0.50 and 2 rad/s
Answer
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Control Systems
Time response for a second order system depends on value of ξ. If ξ = 1 then the system is called as
over damped system.
critically damped system.
undamped system.
under damped system.
over damped system.
critically damped system.
undamped system.
under damped system.
Answer
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Control Systems
The poles of the second order system are at -3 ± j4. The damping ratio of the system is
3/7
3/4
4/5
3/5
3/7
3/4
4/5
3/5
Answer
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