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Control Systems

Control Systems
The characteristic equation has the following roots for over damped stable system?

 -2,-4
 -2,2
 -2,-2
 -2±j4

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Control Systems
Transient state analysis deals with -------------

None of these
 magnitude of error
 nature of response
 both 1 and 2

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Control Systems
Which of the following is the correct expression for the transfer function of an electrical RC phase lag compensating network?

 C/(1+RCS)
 1/(1+RCS)
 RCS/(1+RCS)
 RC/(1+RCS)

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

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

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Control Systems
The system having characteristic equation is used to be an oscillator. What is the value of k?

 1
 4
 3
 2

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Control Systems
The transfer function of the system described by d²/dt²(y(t)) + 3d/dt(y(t)) + 2y(t) = 5u(t) with u(t) as input and y(t) as output is

 5/(s²+3s+2)
 s(s²+3s+2)/5
 5/s(s²+3s+2)
 (s²+3s+2)/5

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