For half wave rectifier if load resistance `R_(d)` is `2 k Omega` and P-N junction resistance `R_(L)` is `2 k Omega` determine rectification efficiency.

A p-n diode is used in a half wave rectifier with a load resistance of 1000 Omega . If the forward resistance (r_(f)) of diode is 10 Omega , calculate the efficiency of this half wave rectifier.

An A.C. supply of 350 V, 60 Hz is applied to a full wave rectifier. If internal resistance of each diode is 200Omega and load resistance R_(1)=5k Omega , then the maximum value of output current is …….

In a common base transistor amplifier if the input resistance R_(i) is 200 Omega and load resistance R_(L) is 20K Omega , find voltage gain (alpha=0.95)