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Control Systems

Control Systems
The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is

 4.
 2.
 0.
 3.

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Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 1
 2
 3
 0

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

 0.
 1/6.
 infinity.
 1.

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Control Systems
The poles of the second order system are at -3 ± j4. The damping ratio of the system is

 4/5
 3/4
 3/5
 3/7

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

 critical stable
 marginally stable
 stable
 unstable

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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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