Tamil literature from Sangam age till contemporary times Tnpsc

Tamil Literature from Sangam Tholkappiyam, Ettuthogai (Eight Anthologies), Pathupattu (Ten Idylls), PathinanKeezhkanakku (a Collection of eighteen poetic works), Pattinapalai, Maduraikanji Epics: Silapathikaram and Manimegalai Silapathikaram Silapathikaram, speaks about the greatness of Poompuhar and its author was Ilango Adigal. The lead female character in Silapathikaram is Kannagi. Maanaigan was the name given to the sea traders … Read more

Communication system Tnpsc

communication science tnpsc

Introduction to Communication System The early communication systems were developed by J.C. Bose, G. Marconi, and Alexander Graham Bell, etc. The communication industry is one of the oldest, it is since telegraph(1844), telephone(1876) and Radio (1887). The current communication technology is Global positioning System (GPS), satellite, mobile and optical communications. The Elements of An Electronic … Read more

Semiconductor basics Pdf for Upsc and other govt exams

Basics of Semiconductor Electronics

All gadgets such as mobile phones, Tv, calculator, etc are Electronics, which has been part of our daily life. Semiconductor basics Pdf Evolution of Electronics The story of electronics started with the invention of vacuum diodes by J.A. Fleming. It was succeeded by a vacuum triode executed by Lee De Forest to Amplify electrical signals. … Read more

Electricity basic concepts Tnpsc

electricity tnpsc

Introduction to Current Electricity The motion of charges is called Electric Current. The current electricity is the study of the flow of electric charges. Alessandro Volta (1745 – 1827) invented the electric battery that generated the first steady flow of electric current. Electric Current The matter is made of atoms. Each atom consists of a … Read more

* * All the Notes in this blog, are referred from Tamil Nadu State Board Books and Samacheer Kalvi Books. Kindly check with the original Tamil Nadu state board books and Ncert Books.