Do we get a stable Dc output for Linear power supply with increase in Load without Ripple?

No way. If your system requires more output channels or higher output power, then using switching supplies is a better option. This provides higher power density than linear supplies. By using switching supplies, you can have12DC outputs, providing up to4000W of power. Switching supplies are easier to control than linear supplies and costs about the same per channel.

By increasing load to a rectifier, ripples appearance will be proportional to the variation of output.

Prof. Nazar M. Karyar.