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ECE · Q151

Signal Processing

Engineering and GATE · ECE · question 151

Q151

The impulse response functions of four linear systems S1, S2, S3, S4 are given respectively by h_1 ( t ) = 1, h_2 ( t ) = u ( t ), h_3 ( t ) = u ( t )t + 1, h_4 ( t ) = e^ - 3tu ( t ) Where u(t) is the unit step function. Which of these systems is time invariant, causal, and stable?

The impulse response functions of four linear systems S1, S2, S3, S4 are given respectively by
       
Where u(t) is the unit step function. Which of these systems is time invariant, causal, and stable?
A.
S1
B.
S2
C.
S3
D.
S4
Answer

Answer: Option D

Solution

Answer: Option D
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