GATE Electrical Engineering (EE) 2019 Solved Paper

Question : 17 of 65

Marks: +1, -0

The symbols, a and T, represent positive quantities and

{u}( {t})

is the unit step function. Which one of the following impulse responses is NOT the output of a causal linear time-invariant system?

Solution:

h(t)=1+e^{-a t} u(t)

represents a Non casual system. But where as option (a), (b), (c) represent casual systems

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