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1. |
An LTI system having transfer function s2+1/s2+2s+1 and input x(t) =sin(t+1) is in steady state. The output is sampled at ws rad/s to obtain the final output {y (k)}. Which of the following is true? |
A. | Y is zero for all sampling frequencies ws |
B. | Y is non zero for all sampling frequencies ws |
C. | Y is non zero for ws>2 but zero for ws<2 |
D. | Y is zero for ws>2 but non zero for ws<2 |
Answer» B. Y is non zero for all sampling frequencies ws | |