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A filter that passes frequencies between two designated cut-off frequencies and attenuates all other frequencies is called?

Correct Answer: band pass filter
A band pass filter passes frequencies between two designated cut-off frequencies and attenuates all other frequencies. A band pass filter has two cut-off frequencies and will have the pass band f2-f1; f1 is the lower cut-off frequency, f2 is the upper cut-off frequency.

A filter that passes all frequencies lying outside a certain range, while it attenuates all frequencies between the two designated frequencies is called?

A filter which attenuates all frequencies below a designated cut-off frequency fc and passes all other frequencies greater than fc is called?

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?

Consider an open loop circuit with lower cutoff frequency 5kHz and upper cutoff frequency 20kHz. If negative feedback is applied to the same, choose correct option stating the new cutoff frequencies.

A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure–drop is 2011Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure–drop as: α (ft/lb) = α (Δp)0.26, where α = 2.90×1010 Viscosity of the filtrate = 6.72×10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance.

The cutoff frequency of the low pass Butterworth filter is the arithmetic mean of the two cutoff frequencies as found above.

Which of the following is/are true of world time zones?
I. The world is divided into thirty time zones
II. All time zones of the world are described in term of the number of hours difference between the standard meridian of that zone and the Greenwich Meridian
III. All countries have more than one time zone
IV. The time for all places east of Greenwich is designated slow, and time for all places left of Greenwich is designated fast

Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is very high, the filter approaches to which of the following filter(s)?

Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is of lower order, the filter approaches to which of the following filter(s)?

A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.