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Control Systems

Control Systems
Find the Laplace transform for sinωt?

 s/(s²+ω²)
 1/s²
 1/s
 ω/(s²+ω²)

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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively

 0.25 and 4 rad/s
 0.25 and 2 rad/s
 0.50 and 2 rad/s
 0.50 and 4 rad/s

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Control Systems
Lowest critical frequency is due to pole and it may be present at the origin or nearer to the origin, then the type of network is

 RC.
 RL.
 LC.
 Any of the above.

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

 Voltage.
 Current.
 Flux.
 Charge.

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Control Systems
The angle condition used for checking whether any point lies on root locus or not is...........

 ± (2q + 1) 360o.
 ± (2q + 1) 180o.
 ± (2q) 360o.
 ± (2q) 180o.

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Control Systems
Find the order of a system given by

 3.
 5.
 2.
 4.

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