List of top Electronics and Communication Engineering Questions on Oscillators and Feedback Amplifier

Given that \(R1=20\text{k}\Omega\), \(C1=2\text{nF}\), \(R2=20\text{k}\Omega\), \(C2=2\text{nF}\), find the approximate resonant frequency of a Wein bridge oscillator.

A negative feedback amplifier has an open-loop gain of 100 and a feedback factor \(\beta = 0.09\). If the open-loop gain changes by 10% due to aging, what is the percentage change in the closed-loop gain of the amplifier?

The following circuit works like a

The SRAM from a memory-read perspective, is indeed a combinational circuit because

A dc voltage supply provides \(60V\) when the output is unloaded. When connected to a load, the output drops to \(56V\). Determine the value of voltage regulation.

Which of the following can be used to produce a square waveform?

Which of the following signals are generated by Wien-bridge oscillators?

The total phase shift of loop in phase shift oscillator is

The main advantage of using crystal oscillator is

Threshold voltage at the comparator of 555 timer is approximately

Wein bridge oscillator is a

Find the operating frequency of a transistor Hartley oscillator for \(L_1 = 20\mu\text{H}\), \(L_2 = 40\mu\text{H}\) and mutual inductance between coils is \(2\mu\text{H}\) and \(C = 1\mu\text{F}\).