The Directed flow of electrons Or charged is called Electric Current. Let's Start understand About Electric current figure shown in above the Copper strip has a larg…

A generating station which converts heat energy of coal combustion into electrical energy is known as a steam power station. A steam power station basically works on t…

A n earth-fault usually involves a partial breakdown of winding insulation to earth. The resulting l eakage current is considerably less than the short-circuit current…

Buchholz relay is a gas-actuated relay installed in oil immersed transformers for protection against all kinds of faults. Named after its inventor, Buchholz, it is used…

The core-balance protection described above suffers from the drawback that it cannot provide protection against overloads. If a fault or leakage occurs between phases,…

The most important precautions must be taken to never open the secondary circuit of current transformer (C.T.) while current following in the primary circuit. Opening of…

A current transformer (C.T.) is used to measure high alternating current in a power system. The primary of the transformer has a few turns of thick wire where as the sec…

OPERATION THEORY An automatic voltage regulator (AVR) is a electronic device for automatically maintaining generator output terminal voltage at a set value under varying…