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Control Systems

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

 10.
 infinity.
 0.
 50.

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

 50.
 20.
 infinity.
 0.

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 cos-1((1 - α)/(1 + α)
 both 1 and 3
 sin-1((1 - α)/(1 + α)
 tan-1((1 - α)/(2√α)

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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)
 (-2,0)
 (-1,0)

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Control Systems
Which of the following transfer functions represent under damped second order systems?

 2/(s² + 2s + 2)
All of these
 1/(s² + s + 1)
 4/(s² + 2s + 4)

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

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

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