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For a first order system having transfer function {1\over(1+sT)}, the unit impulse response is
(a) e^{-t/T}
(b) Te^{-t/T}
(c) {1\over T} e^{-t/T}
(d) T^2 e^{-t/T}
Answer is ( c )
Concept
Solution:In General , the Transfer Function of a system is described in s-domain or z-domain.
\therefore T.F = {1\over(1+sT)}For any given system function / transfer function - The Unit Impulse Response is TIME DOMAIN system RESPONSE
= {1/T\over 1/T+s}
= \frac{1}{T}\left(\frac{1}{s+1}\right)= {1\over T} e^{-t/T}
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