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Control Systems

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

 Inductor.
 Both A and B.
 Capacitor.
 Resistor.

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Control Systems
A proportional plus integral controller

 has high sensitivity
 both 2 and 3
 increases the stability of the system
 it increases rise time

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Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are

 (-2,0)
 (1,0)
 (-1,0)
 (2,0)

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Control Systems
The characteristic equation of a control system is given below: The system is

 unstable
 critical stable
 stable
 marginally stable

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

 20.
 50.
 0.
 infinity.

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Control Systems
The step response of the system described by the differential equation will be

 non of above.
 (1/6)*(1-e-6t).
 e6t.
 e-3t u(t).

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