GATE Electronics and Communications (EC) 2020 Solved Papers

For the BJT in the amplifier shown below, ${\mathit{V}}_{\mathit{B}\mathit{E}}=0.7\mathit{V},\mathit{k}\mathit{T}/\mathit{q}=26\mathit{m}\mathit{V}$. Assume that BJT output resistance $\left({\mathit{r}}_0\right)$ is very high and the base current is negligible. The capacitors are also assumed to be short circuited at signal frequencies. The input ${\mathit{v}}_{\mathit{i}}$ is direct coupled. The low frequency voltage gain ${\mathit{v}}_0/{\mathit{v}}_{\mathit{i}}$ of the amplifier is