1.

Given T.F. H (s) = s + 2 / s2 + s + 4, under steady state condition, the sinusoidal input and output are respectively
x (t) = cos 2t
y (t) = cos (2t + ), then angle of will be

A. 45
B. 0
C. 45
D. 90
Answer» D. 90


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