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Control Systems
Which of the following represents the value of resonant frequency (ωr)?
(ωn) √(1-ζ²/2)
2*(ωn) √(1-ζ²)
(ωn) √(1-ζ²)
(ωn) √(1-2ζ²)
(ωn) √(1-ζ²/2)
2*(ωn) √(1-ζ²)
(ωn) √(1-ζ²)
(ωn) √(1-2ζ²)
Answer
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Related Question
Control Systems
A second order under damped system has damping ratio of 0.3. Find the phase margin of the system?
20°
60°
3°
30°
20°
60°
3°
30°
Answer
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Control Systems
Sparking between the contacts can be reduced by inserting
a reactor in the line.
a resistor in the line.
a capacitor in parallel with the contacts.
a capacitor in series with the contacts.
a reactor in the line.
a resistor in the line.
a capacitor in parallel with the contacts.
a capacitor in series with the contacts.
Answer
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Control Systems
The optimum values of damping ratio is --------------
0.9 to 1.1
0 to 2
0.3 to 5
0.3 to 0.7
0.9 to 1.1
0 to 2
0.3 to 5
0.3 to 0.7
Answer
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Control Systems
Which of the following is/are the characteristics of negative feedback control system?
All of these
Reduction in gain at the expense of better stability
Low sensitivity to parameter variations
Rejection of disturbance signals
All of these
Reduction in gain at the expense of better stability
Low sensitivity to parameter variations
Rejection of disturbance signals
Answer
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Control Systems
The Laplace transformation of f(t) is F(S) given the final value of f(t) is
Infinite.
Zero.
One.
None of them.
Infinite.
Zero.
One.
None of them.
Answer
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