Select the correct statement.

$A$ rectifier is used to

If the output frequency of a full-wave rectifier is $100 \text{ Hz}$, then the input frequency will be . . . . . . . (in $\text{ Hz}$)

In a full-wave $P-N$ junction diode rectifier,a load resistance of $1500 \ \Omega$ is used. No filter is used. Assume each diode has a forward resistance $R_f = 10 \ \Omega$ and a reverse resistance $R_f = \infty$. When an input voltage with an amplitude of $30 \ V$ and a frequency of $50 \ Hz$ is applied,what are the peak,average,and $RMS$ values of the load current,respectively?

$A$ half-wave rectifier is used to supply $100 \, V$ $dc$ to a load of $800 \, \Omega$. The diode resistance is $200 \, \Omega$. The $ac$ voltage required is :.......$V$

The maximum efficiency of a full-wave rectifier is .........$\%$