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Control Systems

Control Systems
If a body has identical properties all over, it is known as

 homogeneous.
 elastic.
 none of them.
 isotropic.

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Control Systems
A second order control system has a transfer function 16/(s² + 4s + 16). Find the settling time for 2% tolerance?

 2 sec
 5 sec
 10 sec
 4 sec

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Control Systems
Force balancing equation of a mass element is (where, x = displacement)

 M d2x/dt2
 M *x
 any of the above
 M dx/dt

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Control Systems
The system is initially critical damped. If the gain of the system is doubled, then it will exhibit

 under damped characteristics.
 over damped characteristics.
 undamped characteristics.
 critical damped characteristics.

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Control Systems
A controller transfer function is given by . What is its nature and parameter?

 lead compensator, α = 0.2
 lead compensator, α = 0.1
 lag compensator, β = 2
 lag compensator, β = 10

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Control Systems
Which of the following is/are the characteristics of negative feedback control system?

 Low sensitivity to parameter variations
 Rejection of disturbance signals
All of these
 Reduction in gain at the expense of better stability

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