Focus on the fundas

To be good at Engineering Common Sense(Common Sense Engg/Tech., in my opinion), one must continually review the basic concepts of 10+2 level, PCMB subjects.
There is no shortcut to attaining good skills in Engg. designs, as Math. , Graphical and Geometrical abilities only can do the miracles for all kinds of application-oriented Engg. jobs.
God Bless...

Re-energize yourself by:

Solving some harder problems on 10+2 level Physics and Mathematics, just as a pastime, for enjoying the art of mental concentration....
you know it's all about
ADDITION,
SUBTRACTION,
MULTIPLICATION,
DIVISION,
DIFFERENTIATION,
AND
INTEGRATION
etc.
etc

LET US ENJOY MATHEMATICS ONLY TO FORGET ABOUT MINOR PAINS AND PLEASURES OF LIVING....

To research on the following topics

ENERGY SAVING DEVICES

AUTOMATIC ROOM POWER CONTROLLER

SOLAR POWER FOR DOMESTIC APPLICATIONS:ECONOMIC CONSIDERATIONS