# Questions & Answers of Oscillators and Feedback Amplifiers

## Weightage of Oscillators and Feedback Amplifiers

Total 5 Questions have been asked from Oscillators and Feedback Amplifiers topic of Analog and Digital Electronics subject in previous GATE papers. Average marks 1.60.

In the Wien Bridge oscillator circuit shown in figure, the bridge is balanced when

An oscillator circuit using ideal op-amp and diodes is shown in the figure.

The time duration for +ve part of the cycle is $\Delta {t}_{1}$ and for –ve part is $\Delta {t}_{2}$. The value of $\frac{\Delta {t}_{1}-\Delta {t}_{2}}{RC}$ will be _____________.

In the feedback network shown below, if the feedback factor k is increased, then the

A 3-line to 8-line decoder, with active low outputs, is used to implement a 3-variable Boolean function as shown in the figure

The simplified form of Boolean function F(A,B,C) implemented in ‘Product of Sum’ form will be