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Control Systems

Control Systems
Which of the following is the electrical analogous element for displacement in force-voltage analogy?

 Flux.
 Voltage.
 Current.
 Charge.

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Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are

 (1,0)
 (2,0)
 (-2,0)
 (-1,0)

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Control Systems
By using which of the following elements, mechanical translational systems are obtained?

 spring element
 mass element
 dash-pot
All of these

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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?

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

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 0 and -4.
 any of the above.
 0 and 4.
 -4 and -6.

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Control Systems
The input-output relationship of a linear time invariant continuous time system is given by r(t) = d²c(t)/dt² + 3 dc(t)/dt + 2 c(t) Where r(t) and c(t) are input and output respectively. What is the transfer function of the system equal to?

 1/(s² + s + 2)
 2/(s² + 3s + 2)
 1/(s² + 3s + 2)
 2/(s² + s + 2)

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