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Which condition determines the causality of the LTI system in terms of its impulse response?

A. Only if the value of an impulse response is zero for all negative values of time

B. Only if the value of an impulse response is unity for all negative values of time

C. Only if the value of an impulse response is infinity for all negative values of time

D. Only if the value of an impulse response is negative for all negative values of time

Related Questions on Signals & Systems Test Questions

Damped sinusoids are _____

A. sinusoid signals multiplied by growing exponentials

B. sinusoid signals divided by growing exponentials

C. sinusoid signals multiplied by decaying exponentials

D. sinusoid signals divided by decaying exponentials

A system is said to be shift invariant only if______

A. a shift in the input signal also results in the corresponding shift in the output

B. a shift in the input signal does not exhibit the corresponding shift in the output

C. a shifting level does not vary in an input as well as output

D. a shifting at input does not affect the output