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Control Systems

Control Systems
Transient response is improved in case of

 both A and B.
 lead network.
 none of these.
 lag network.

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

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

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Control Systems
Number of sign changes in the entries in 1st column of Routh array denotes the no. of

 zeroes of system in RHP.
 roots of characteristic polynomial in RHP.
 open loop poles in RHP.
 open loop zeroes in RHP.

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Control Systems
With regard to filtering property, the lead compensator is

 band reject filter
 bandpass filter
 low pass filter
 high pass filter

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Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

 B dx/dt
 B d2x/dt2
 B *x
None of these

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Control Systems
Which of the following represents the value of resonant frequency (ωr)?

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

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