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The laplace transform of a cascaded system is defined if _______(a) the individual systems have a common R.O.C.(b) the individual systems doesn’t have a common R.O.C.(c) the impulse response of each system is defined(d) cannot be determinedI got this question during an internship interview.I'd like to ask this question from Laplace Transform topic in division Control System Applications of MATLAB |
Answer» CORRECT option is (a) the INDIVIDUAL SYSTEMS have a common R.O.C. The explanation: It’s necessary for the individual systems, in a cascaded system, to have a common R.O.C.- OTHERWISE the Laplace transform won’t be absolutely CONVERGING in a region. If ti doesn’t converge, the transform is not defined. |
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