A filter which passes without attenuation all frequencies up to the cut-off frequency fc and attenuates all other frequencies greater than fc is called?(a) high pass filter(b) low pass filter(c) band elimination filter(d) band pass filterI had been asked this question in an online interview.My query is from Filter Networks topic in division Filters and Attenuators of Network Theory

A filter which passes without attenuation all frequencies up to the cu

1.	A filter which passes without attenuation all frequencies up to the cut-off frequency fc and attenuates all other frequencies greater than fc is called?(a) high pass filter(b) low pass filter(c) band elimination filter(d) band pass filterI had been asked this question in an online interview.My query is from Filter Networks topic in division Filters and Attenuators of Network Theory
Answer» Right choice is (b) low pass FILTER To explain I would say: A filter is CALLED a low pass filter if it passes all FREQUENCIES up to the cut-off frequency fc without attenuation and attenuates all other frequencies greater than fc. This transmits CURRENTS of all frequencies from ZERO up to the cut-off frequency.

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