In a half-wave rectifier, an $AC$ input source of frequency $50 \,Hz$ is used. The fundamental frequency of the output is: (in $\,Hz$)

For the given electric voltage signal,the $dc$ value is......$V$.

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

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.

If an alternating voltage is applied across a $p-n$ junction diode in series with a load,then:

$A$ $PN$ junction diode is used as: