In a full-wave rectifier, if the input frequency is $50 \ Hz$, then the output ripple frequency is ......... $Hz$.

$A$ 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:

In a full-wave rectifier circuit without a filter,the output current is

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?

If the maximum efficiency of a full wave rectifier is $x \%$ and that of a half wave rectifier is $y \%$,then the relation between $x$ and $y$ is

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