Knowledge is power essay

Introduction of Efficiency of Transformer Transformers form the most important link between supply systems and load. Transformer’s efficiency directly affects its performance and aging. The transformer’s efficiency, in general, is in the range of 95 – 99 %. For large power transformers with very low losses, the efficiency can be as high as 99.7%. The input and output measurements of a transformer are not done under loaded conditions as the wattmeter readings inevitably suffer errors of 1 – 2%. So for the purpose of efficiency calculations, OC and SC tests are used to calculate rated core and winding losses in the transformer. The core losses depend on the transformer rated voltage, and the copper losses depend on the currents through the transformer primary and secondary windings. Hence transformer efficiency is of prime importance to operate it under constant voltage and frequency conditions. The rise in the temperature of the transformer due to heat generated affects the life of ...

It was around 1856 when two brilliant minds Nikola Tesla and Thomas Edison were having a rivalry against each other. Those were the times when electricity and its applications of glowing a bulb and running a motor were just being noticed. It was Edison and his associates who first discovered DC (Direct Current) system, then some time after that Tesla came up with his AC (Alternating current) system. Since then, the both were trying to prove that their system is more advantageous than the other. By then, the time has come for houses to get electricity. While Edison was busy demonstrating how dangerous AC is by electrocuting elephants, Tesla and his team came up with the transformers which made transmitting electricity a lot easier and efficient. Even, today Transformers play a vital role in the transmission system. Let’s know why.  Transmitting electricity with high voltages and low currents will help us reduce the thickness of the transmission wires and thus the cost, it also incre...