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Control Systems

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

 1/6.
 infinity.
 1.
 0.

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Control Systems
The closed loop transfer function of a system is 25/(s² + 25). The settling time of the system is

 1 sec
 5 sec
 ∞ sec
 25 sec

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

 20.
 0.
 40.
 infinity.

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Control Systems
The magnitude of a transfer function G(jω)H(jω) at gain cross over frequency is

 infinity
 1
 any of the above
 0

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Control Systems
If a circuit consists of two mass elements, two spring elements and four friction elements. Find the order of transfer function?

 4
 2
 12
 6

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

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

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