engineering recuitment HPCL Junior Executive 2025 Mock Test Signals and Systems Linear Time Invariant Systems Discrete Time LTI Systems
A discrete time signal, which is both linear and time invariant has an impulse response is u[n]. What is the response of the system for an input δ[n - 4]?
1
u[n - 2]
2
u[n - 4]
3
u[n + 2]
4
u[n + 4]