railway RRB JE (CBT I + CBT II) Mock Test 2024 Analog Electronics Op-Amp and Its Applications Filters
Determine the order of a low pass filter with Butterworth approximation which has pass band gain of -2 dB for 0 ≤ ω ≤ 10 and stop band gain of -20 dB for ω ≥ 20.
1
2
2
5
3
4
4
6