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Control Systems

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

 Resistor.
 Capacitor.
 Inductor.
 Both A and B.

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Control Systems
The Laplace transform of a transportation lag of 5 seconds is

 1/(s+5).
 e-5s.
 1/(s-5).
 e5s.

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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)
 (-2,0)
 (-1,0)
 (1,0)

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Control Systems
A box which tells the effect of inputs on control sub system is known as

 Data Box.
 Logical box.
 Decision box.
 State box.

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Control Systems
The angle condition used for checking whether any point lies on root locus or not is...........

 ± (2q + 1) 360o.
 ± (2q) 360o.
 ± (2q) 180o.
 ± (2q + 1) 180o.

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

 10.
 50.
 infinity.
 0.

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