A first order system with unity gain and time constant η is subjected to a sinusoidal input of frequency w = 1/η. The amplitude ratio for this system is______________?
Correct answer: C. 1/√2
- A. 1
- B. 0.5
- C. 1/√2
- D. 0.25
Explanation
For a first-order system, the amplitude ratio is 1/√[1+(ωη)²]. With ωη = 1, it becomes 1/√2.
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