Basic Electronic filter

-------------------- is a circuit which can be designed to modify , reshape or reject all undesired frequencies .

• Filter

• oscillator

• Amplifier

• Rectifier

The electronic filter is usually a frequency selective network that passes a specify band of frequencies and ----------------- signals of frequencies outside this band

• Allow

• Block

What are filters created by using resistors and capacitors or inductors and capacitors called

• Active filter

• Passive filter

• Differential filter

• All pass filter

A Circuit that uses an amplifier with passive filter elements is called as

• Oscillator

• Signal Generator

• Active Filter

• Differential Amplifier

Active filters are usually fabricated by

• R

• RC

• RLC

• OP -AMP

An electrical filter is a

• Phase-selective circuit

• Frequency-selective circuit

• Filter-selective circuit

• None of the mentioned

The problem of passive filters is overcome by using

• Analog filter

• Active filter

• LC filter

• A combination of analog and digital filters

Filters are classified as:

• Analog or digital

• Passive or active

• Audio or radio frequency

• All of the mentioned

_________ is the frequency at which the filter starts to attenuate the signal

• roll-off frequency

• Ac frequency

• Cut-off frequency

• Bandwidth frequency

_______ is how quickly the filter attenuates frequencies beyond the cut-off

• Bandwidth rate

• Cut-off rate

• Oscillation rate

• roll-off rate