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Control Systems

Control Systems
The type number of the control system with G(s) = k(s+2)/(s(s²+2s+3) is

 0
 1
 3
 2

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

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

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Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is

 0.500.
 0.693.
 1.386.
 2.000.

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

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

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Control Systems
The characteristic equation has the following roots for over damped stable system?

 -2,-4
 -2,2
 -2,-2
 -2±j4

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Control Systems
Find the stability for the following transfer function G(s) = 50/s(s+5) ?

 Marginally stable
 Critically stable
 Unstable
 Stable

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