The electrical circuit used to get smooth $dc$ output from a rectifier circuit is called

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 $....$.

Write the principle of a rectifier.

The function of a rectifier is

If the frequency of the input voltage is $50 \,Hz$, applied to a $(a)$ half-wave rectifier and $(b)$ full-wave rectifier, what is the output frequency in both cases, respectively?

$A$ sinusoidal voltage of peak value $200 \ V$ is connected to a diode and resistor $R$ in the circuit shown so that half-wave rectification occurs. If the forward resistance of the diode is negligible compared to $R$,the rms voltage (in volt) across $R$ is approximately: