Sunday, December 13, 2009

Systematic Revision

Question: What is the most important memory technique for exam?

Answer: Revision.

As the chart diagram shows below, without revision, we forget 82% within 24 hours.

We remember better at about 10 minutes after the learning finishes. The reason for this strange memory phenomenon is simple: at the moment learning period finishes, the brain has not had enough time to organize and store the last items. It needs a few minutes to store, organize, integrate the last items.

Please note that the memory decreases sharply after initial learning. We remember only 18% after 24 hours.

We forget 82% of all that we learn within 24 hours!!

This is a very important fact for you to remember.

So, you must revise in a systematic way to get the maximum benefit from your hard work.


Friday, December 4, 2009

Star - Delta (Wye) conversion of resistances.












This is something that is not taught in many coaching classes. It is enough to know the formulas or equations required to perform these conversions. Will help a lot in simplifying difficult circuits in Current electricity.