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Control Systems

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

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

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Control Systems
A second order control system has F(jω) = 100/(100 - ω² + 10√2 jω). Find the resonant peak?

 1
 1.5
 0.5
 0.707

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Control Systems
Which of the following is/are represents the lag compensator?

 (s+2)/(s+1)
 both 1 and 2
 (s+5)/(s+6)
 (s+2)/(s+5)

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Control Systems
The second order system defined by 25/(s2 + 5s + 25) is given a step input. The time taken for the output to settle with in 2 % of input is

 1.2 sec.
 1.6 sec.
 0.4 sec.
 2 sec.

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Control Systems
The compensator would provide a maximum phase shift of

 60o.
 30o.
 20o.
 45o.

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Control Systems
Settling time for 5% tolerance band is -------------

 2T.
 4T.
 3T.
 5T.

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