# Analogue Circuits

The damping factor of an active filter determines

A feedback circuit usually employs ……………… network

The rate of change of amplitude with frequency in a filter is the

In a Wien-bridge oscillator, if the resistance in the positive feedback circuit are decreased, the frequency

A second condition for oscillation is

phase-shift oscillator has

Which of the following filter is very small and inexpensive and widely used in communication transmitters and receivers?

An oscillator whose frequency is charged by a variable dc voltage is known as

A maximally flat frequency response is known as

If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately………..

When filters are cascaded, the roll-off rate

The voltage gain of a tuned amplifier is ……………. at resonant frequency

An LC oscillator cannot be used to produce ……………….. frequencies

Sallen-Key filters are

The operation of a relaxation oscillator is based on

One condition for oscillation is ………….

Which of the following is a fixed tuned bandpass filter that is designed to provide the exact selectivity required by a given application?

A state-variable filter consist of

The gain of an amplifier with feedback is known as ………….. gain