GENERAL KNOWLEDGE

-
 Here you can find PDF  files regarding to general knowledge topics of competitive exams.You can download the pdf files and you can prepare for your exams easily.

Comments

Post a Comment

Popular posts from this blog

HIGH SPEED CONNECTIVITY

-
Image
High speed connectivity at 25 Gbps Mouser Electronics, Inc., the industry’s leading New Product Introduction (NPI) distributor with the widest selection of  semiconductors   and electronic components, is now stocking the Sliver internal cabled interconnects from TE Connectivity (TE), a global leader in connectivity and sensors. Helping to address the latest high-speed demands in networking, TE’s Sliver internal cabled interconnects offer improved performance and extended reach while also saving space and lowering design costs for data rate signals within a variety of data communication platforms. TE’s Sliver internal cabled interconnects, available from Mouser Electronics, address expanding network challenges experienced by designers by providing a flexible, robust and cost-effective system that can help manage large workloads and higher data rates (at 25 Gbps and beyond) and support longer-term data growth. Designed to work alongside a cable assembly as a surface-mounted con
Read more

Electronics,semiconductors

-
Image
                                                       ELECTRONICS Definition of electronics:       electronics is a science which deals with the study of flow and control of electrons and the study of their behaviour and effects in vaccum,gases and semiconductors,and with devices using such electrons. A ctually everyone confuses between electronic and electrical.the basic difference between them is simple. electronics deals with the flow of charge through non metal conductors electrical deals with the flow of charge through metal conductors   here non metal conductors means semi conductors .we will see how semi conductors act like non metals below. metals can be classified as insulators ,semiconductors and conductors. INSULATORS: diamond SEMI CONDUCTORS: graphite, germanium and silicon CONDUCTORS: aluminium ,copper   conduction band consists of holes which are positively charged
Read more

invention of cellphones

-
Image
Do you know who invented cell phones? 1873: British physicist  James Clerk Maxwell  (1831–1879) published the theory of electromagnetism, explaining how how electricity can make magnetism and vice-versa. Read more about his work in our main article on  magnetism . 1876: Scottish-born inventor  Alexander Graham Bell  (1847–1922) developed the first telephone while living in the United States (though there is some dispute about whether he was actually the original inventor). Later, Bell developed something called a "photophone" that would send and receive phone calls using light beams. Since it was conceived as a wireless phone, it was really a distant ancestor of the modern mobile phone. 1888: German physicist  Heinrich Hertz  (1857–1894) made the first electromagnetic radio waves in his lab. 1894: British physicist  Sir Oliver Lodge  (1851–1940) sent the first message using radio waves in Oxford, England. 1899: Italian inventor  Guglielmo Marconi  (1874–1937) se
Read more