List of top Electronics and Communication Engineering Questions on Amplifiers asked in AP ECET ECE

An amplifier having zero dB bandwidth of \(20\,kHz\) followed by a narrow band pass filter having \(10\,kHz\). The overall lower frequency is numerically equal to

The lower cut-off frequency of \(N\) cascaded stages is given by

A conductor acquires excess electrons has individual voltage gain of \(25 \times 10^4\). Its overall gain in dB is

The gain of an amplifier with positive feedback is given by the relation