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Two LTI systems in cascade form as shown in below figure-
If h1(n) = 3nu(n) and h2(n) = 3δ(n) – 3δ(n – 1) and If x(n) = sin(n) then output will be
  • a)
    3cos(n-1)
  • b)
    5sin(n/2)+3sin(n)
  • c)
    2sin(n)+5cos(n)
  • d)
    3sin(n)
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Two LTI systems in cascade form as shown in below figure-If h1(n) = 3...
Here two LTI systems are in cascaded form and the overall impulse response is-
h(n)=h2(n)*h1(n)=[ 3δ(n) – 3δ(n – 1)]* 3n u(n)
= 3n+1 u(n)- 3n+1 u(n-1)
= 3n+1 δ (n)
h(n)= 31 δ (n)
Since input is sin (n) hence output will be
h(n)*Sin (n)= 3δ (n)*sin(n)=3sin(n)
thus the band width gets reduced in a multi-stage amplifier.
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Two LTI systems in cascade form as shown in below figure-If h1(n) = 3nu(n) and h2(n) = 3δ(n) – 3δ(n – 1) and If x(n) = sin(n) then output will bea)3cos(n-1)b)5sin(n/2)+3sin(n)c)2sin(n)+5cos(n)d)3sin(n)Correct answer is option 'D'. Can you explain this answer?
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Two LTI systems in cascade form as shown in below figure-If h1(n) = 3nu(n) and h2(n) = 3δ(n) – 3δ(n – 1) and If x(n) = sin(n) then output will bea)3cos(n-1)b)5sin(n/2)+3sin(n)c)2sin(n)+5cos(n)d)3sin(n)Correct answer is option 'D'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2025 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about Two LTI systems in cascade form as shown in below figure-If h1(n) = 3nu(n) and h2(n) = 3δ(n) – 3δ(n – 1) and If x(n) = sin(n) then output will bea)3cos(n-1)b)5sin(n/2)+3sin(n)c)2sin(n)+5cos(n)d)3sin(n)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two LTI systems in cascade form as shown in below figure-If h1(n) = 3nu(n) and h2(n) = 3δ(n) – 3δ(n – 1) and If x(n) = sin(n) then output will bea)3cos(n-1)b)5sin(n/2)+3sin(n)c)2sin(n)+5cos(n)d)3sin(n)Correct answer is option 'D'. Can you explain this answer?.
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