The $PN$ junction diode is used as:

$A$ sinusoidal peak voltage of $15\ V$ is connected between the input terminals of the circuit shown in the figure. Assume the diodes are ideal. In the output waveform,

The output current versus time curve of a rectifier is shown in the figure. The average value of the output current in this case is

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 output across the diode in the given circuit is:

In the circuit shown in the figure, determine the output waveform and the output d.c. level of $V_0$.