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Control Systems

Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 2
 1
 3
 0

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Control Systems
In which of the following controller band width is increased?

 both 1 and 2
 nether 1 nor 2
 proportional plus integral controller
 proportional plus derivative controller

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Control Systems
The unit step error coefficient of a system with unity feedback is

 1/6.
 0.
 1.
 infinity.

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

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

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Control Systems
The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is

 1/(s+1)
 1/s
 1/s(s+1)
 s/(s+1)

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

 Electric motor
 Pneumatic motor
 Hydraulic motor
 All

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