If a full wave rectifier circuit is operating from $50\, Hz$ mains,the fundamental frequency in the ripple will be........$Hz$.

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 reverse resistance $R_r = \infty$. When a sinusoidal voltage with a peak amplitude of $30 \ V$ and frequency $50 \ Hz$ is applied, calculate the $D.C.$ power output and $A.C.$ power input respectively.

In the half wave rectifier circuit operating from $50\, Hz$ mains frequency,the fundamental frequency in the ripple would be......$ Hz$

In half wave rectification,if the input frequency is $60\,Hz$,then the output frequency would be $\dots\dots\dots\,Hz$.

$A$ full-wave rectifier circuit along with the input and output voltage waveforms is shown in the figure. The contribution to the output voltage from diode $2$ is:

$A$ 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 value of voltage across $R$ is approximately (in volt):