Post date: Feb 25, 2014 12:24:33 AM
If you give a unit step input to a stable first order system whose initial state is at a non-equilibrium point, then what best describes the response?
a) init_state + exponential
b) init_state * exponential
c) sum of two exponentials
d) product of two exponential
e) sum of a sinusoid and exponential
f) product of sinusoid and exponential
Answer: The response will be the superposition of 1. exponential decay response to initial state (zero-input response), and 2. (1-exp) response to the step input (zero-state response). Hence, the answer is 'c'.