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What is the impulse response of a system whose transfer function is that of pulse function?(a) u(t)+u(t-4)(b) u(t)-u(t-3)(c) u(t)-u(t-4)(d) u(t)-u(t+4)This question was posed to me in examination.The doubt is from Impulse Response in portion Control System Applications of MATLAB |
Answer» CORRECT answer is (c) u(t)-u(t-4) The EXPLANATION: The inverse laplace transform of the transfer function GIVES the impulse response of a system. Now, the PULSE shown in the above figure exists from t=0 to t=4 in time. The correct representation of the pulse is GIVEN by option u(t)-u(t-3) only. |
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