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Control Systems

Control Systems
Resonant peak of a marginally stable system is

 any of the above
 finite value
 0
 infinite

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Control Systems
A proportional plus derivative controller

 both 1 and 2
 has high sensitivity
 increases the stability of the system
 improves the steady state accuracy

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Control Systems
The system having characteristic equation is used to be an oscillator. What is the value of k?

 4
 3
 1
 2

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Control Systems
When the polynomial is Routh Hurwitz,

 all zeroes lie in the right half of the s-plane.
 the function is not real.
 none of these.
 the roots of function have real parts which are to be zero/negative.

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Control Systems
Find the relation of damped natural frequency (ωd)

 (ωn) √(1-ζ²)
 (ωn) √(1-1/ζ²)
 (ωn) √(1-2ζ²)
 (ωn) √(1-4ζ²)

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Control Systems
Which of the following is/are the characteristics of negative feedback control system?

 Rejection of disturbance signals
All of these
 Reduction in gain at the expense of better stability
 Low sensitivity to parameter variations

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