What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
Correct answer: A. < 1
- A. < 1
- B. > 1
- C. 1
- D. None of these
Explanation
For a first-order system, the amplitude ratio is 1/√[1+(ωτ)²]. Thus it is less than unity for a sinusoid of nonzero frequency, because the system attenuates dynamic signals.
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