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Control Systems

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

 lead
 lag-lead
 lead-lag
 lag

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

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

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Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 2
 4
 8
 6

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Control Systems
When writing a transfer function which of the following loops are not valid loops?

 Both 1 and 2.
 Self loops at input node.
 Self loops at output node.
 Neither 1 nor 2.

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Control Systems
A second order control system has F(jω) = 100/(100 - ω² + 10√2 jω). Find the resonant peak?

 1
 0.5
 1.5
 0.707

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Control Systems
The transfer function of a system given by The system is

 a critically damped.
 unstable.
 an over damped.
 an under damped.

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