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Control Systems

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

 3
 1
 2
 4

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Control Systems
For a unity feedback control system open loop transfer function then acceleration error constant is

 50.
 0.
 infinity.
 20.

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Control Systems
The transfer function of a phase lead compensator is given by: G(s) = (1 + 3Ts)/(1 + Ts) where T>0. What is the maximum phase shift provided by such a compensator?

 90°
 30°
 60°
 45°

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Control Systems
Which of the following is/are the example of actuator?

 All
 Pneumatic motor
 Electric motor
 Hydraulic motor

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Control Systems
Which of the following is the correct expression for the transfer function of an electrical RC phase lag compensating network?

 RC/(1+RCS)
 C/(1+RCS)
 RCS/(1+RCS)
 1/(1+RCS)

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Control Systems
The optimum values of damping ratio is --------------

 0.3 to 0.7
 0.9 to 1.1
 0 to 2
 0.3 to 5

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