A half-wave rectifier, having a resistive load of 1000 V, rectifies an alternating voltage of 325 V peak value & the diode has a forward resistance of 100 V. Calculate (a) peak, average and rms value of current (b) dc power output (c) ac input power, and (d) efficiency of the rectifier

Precipitation hardening can be achieved in many light alloys by a three-step heat treatment. what is carried out and what is the purpose at each step? why is such a treatment necessary based on the nucleation and growth theory of phase transformation. compare this treatment with tempering martensite for carbon steels (similarities and differences).