railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Signals and Systems Linear Time Invariant Systems Convolution of Signals
Two systems with impulse responses h1 (t) and h2 (t) are connected in cascade. Then the overall impulse response of the cascaded system is given by
1
Product of h1 (t) and h2 (t)
2
Sum of h1 (t) and h2 (t)
3
Convolution of h1 (t) and h2 (t)
4
Subtraction of h2 (t) from h1 (t)