Active Filters

Which filter type is called a flat-flat filter?

• Cauer filter

• Butterworth filter

• Chebyshev filter

• Band-reject filter

Which filter performs exactly the opposite to the band-pass filter?

• Band-reject filter

• Band-stop filter

• Band-elimination filter

• All of the mentioned

Given the lower and higher cut-off frequency of a band-pass filter are 2.5kHz and 10kHz. Determine its bandwidth.

• 750 Hz

• 7500 Hz

• 75000 Hz

• 750000 Hz

In which filter the output and input voltages are equal in amplitude for all frequencies?

• All-pass filter

• High pass filter

• Low pass filter

• All of the mentioned

The gain of the first order low pass filter

• Increases at the rate 20dB/decade

• Increases at the rate 40dB/decade

• Decreases at the rate 20dB/decade

• Decreases at the rate 40dB/decade

The Frequency Response Curve for LPF is given by

• b

• a

• c

• d

Identify the frequency response curve for a band-pass filter.

• b

• a

• c

• d

Identify the frequency response curve for a band-pass filter.

• b

• a

• c

• d

A ________ filter significantly attenuates all frequencies below f_c and passes all frequencies above f_c.

• low-pass

• band-pass

• high-pass

• band-stop

The gain of the multiple-feedback band-pass filter above is equal to which of the following? Assume C = C₁ = C₂.

• A₀ = R₂ / R₁

• A₀ = R₁ / R₂

• A₀ = R₂ / 2 R₁

• A₀ = R₁ / 2 R₂