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Control Systems

Control Systems
Resonant peak of a marginally stable system is

 infinite
 0
 any of the above
 finite value

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Control Systems
Type and order of transfer function G (s) = K / {s(s + 2)}

 1, 2.
 2, 1.
 1, 1.
 0, 2.

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Control Systems
A second order system has peak over shoot = 50% and period of oscillations 0.2 seconds. Find the resonant frequency?

 29.74 ra/s
 30.63 rad/s
 31.41 rad/s
 32.16 rad/s

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Control Systems
Error at corner frequency ωcf of first order control system is -------

 ±4 db
 ±3 db
 ±2 db
 ±1 db

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

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

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Control Systems
In frequency response analysis of second order system, the error at corner frequency is

 20 log2ξ
 10 logξ
 -10 logξ
 -20 log2ξ

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