Question:-
Two discrete time systems with impulse responses h1[n] = d [n -1] and h2[n] = d [n – 2] are connected in cascade. The overall impulse response of the cascaded system is
Option (A)
d [n - 1] + d [n - 2]
Option (B)
d [n - 4]
Option(C)
d [n - 3]
Option(D)
d [n - 1] d [n - 2]
Correct Option:
(C)
Question Solution:
H1(n) ® delay by 1, h2(n) ® delay by 2, h1(n)*h2(n) ® delay by 3
question-answer-faq-2154