$A$ $p-n$ junction diode as a rectifier converts

For the circuit shown in the adjoining figure,to act as a full-wave rectifier,the $AC$ input should be connected across $....$ and $....$ and the $DC$ output would appear across $....$ and $....$.

Match List $I$ with List $II$.

List $I$	List $II$
$(a)$ Rectifier	$(i)$ Used either for stepping up or stepping down the $a.c.$ voltage
$(b)$ Stabilizer	$(ii)$ Used to convert $a.c.$ voltage into $d.c.$ voltage
$(c)$ Transformer	$(iii)$ Used to remove any ripple in the rectified output voltage
$(d)$ Filter	$(iv)$ Used for constant output voltage even when the input voltage or load current change

Choose the correct answer from the options given below:

The peak voltage in the output of a half-wave diode rectifier fed with a sinusoidal signal without a filter is $10 \, V$. The $dc$ component of the output voltage is

For the given electric voltage signal,the $dc$ value is......$V$.

$A$ full-wave rectifier circuit is operating from $50 \text{ Hz}$ mains. The fundamental frequency in the ripple output will be: (in $\text{ Hz}$)