Multiple choice technology

AN INTEGRATOR ALSO ACT AS A ??

  1. HIGH PASS FILTER

  2. ALL PASS FILTER

  3. BAND PASS FILTER

  4. LOW PASS FILTER

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An integrator has transfer function 1/s, which attenuates high frequencies (amplitude inversely proportional to frequency) and passes low frequencies. This is exactly the characteristic of a low-pass filter. In frequency domain, the gain decreases as frequency increases.