The diodes in the full-wave DC power supply shown in Figure P8. 25 are silicon. If:
$$
\begin{aligned}
I_L & =600 \mathrm{~mA} \quad V_L=50 \mathrm{~V} \\
V_r & =8 \%=4 \mathrm{~V} \\
V_{\text {line }} & =170 \cos (\omega t) \mathrm{V} \quad \omega=377 \mathrm{rad} / \mathrm{s}
\end{aligned}
$$
determine the value of:
a. The turns ratio, $n$.
b. The value of the capacitor, $C$.