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Control Systems

Control Systems
First Foster form of a LC network represents which element in the beginning?

 Resistor.
 Both A and B.
 Capacitor.
 Inductor.

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Control Systems
Electrical analogous element for damper element (force-voltage analogy) in mechanical translation system is

 any of the above
 inductor
 capacitor
 resistor

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 tan-1((1 - α)/(2√α)
 cos-1((1 - α)/(1 + α)
 both 1 and 3
 sin-1((1 - α)/(1 + α)

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

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

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Control Systems
The magnitude of a transfer function G(jω)H(jω) at gain cross over frequency is

 infinity
 any of the above
 1
 0

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Control Systems
Time constant is defined as the time taken by the response of the system to reach ----------- ?

 70.7% of the final value
 50% of the final value
 63% of the final value
 100% of the final value

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