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Control Systems

Control Systems
Find the Laplace transform for sinωt?

 1/s
 1/s²
 ω/(s²+ω²)
 s/(s²+ω²)

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Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 1
 0
 2
 4

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

 Charge.
 Flux.
 Voltage.
 Current.

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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?

 5 sec
 4 sec
 10 sec
 2 sec

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Control Systems
The type of a control system is obtained from -------------- transfer function?

 open loop
 both open loop and closed loop
 closed loop
 none of above.

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

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

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