Notch-filter is the renowned name of _____.

Notch-filter is the renowned name of _____.

a. Band-elimination Filter
b. Band pass Filter
c. Wide-band reject filter
d. Narrow band reject filter

Correct Answer : d. Narrow band reject filter

Explanation :

Band-reject filters are those which shows the frequency attenuation in the stop-band while they get passed outside this band. Similar to band-pass filters, band-reject filters also gets classified into wide & narrow band-reject filters. Narrow band-reject filter is commonly known as notch filter since it has high quality factor (Q>10) & bandwidth is very much smaller as compared to that of wide band-reject filters.
These narrow band-reject filters are widely used for single frequency rejection like 60 Hz power line frequency hum. For an instance, twin-T network . Notch filter finds its applications in the aspects of communication & biomedical instruments so as to remove the unwanted frequencies.