Basic concepts

Methods of Electrical Wiring Testing All new completed electrical installation should be tested before connection to the supply, to ensure that the installation is technically sound and free from any possible short circuits, etc. the main reasons, to test a new electrical installation or house wiring before it is switched on to the mains are […]

High resistivity materials are used for making resistance elements for heating devices, starters for electric motors, resistances used in precision measuring instruments, loading resistances and rheostats and filaments for incandescent lamps. High resistivity materials are used in all such applications where a large value of resistance is required. If low resistivity materials were used for such

Hi friends, In this article, I am discussing the “Creep in materials.” Types of creep and creep strength. So let us start. Metals will deform under steady service loads less than the short-time elastic strength if the loads are applied for a very long time at temperatures near the crystallization temperature. Apparently, the atoms tend

Hi friends,   In this article, am discussing the properties of superconductors and the applications of superconductors. This article will provide you sufficient information about superconductors.   The resistivity of most metals increases with increase in temperature and vice-versa. There are some metals and chemical compounds whose resistivity becomes zero when their temperature is brought

In this system, a delta/star-connected transformer is used. Three wires are taken from the phases and the fourth wire (i.e. neutral wire) is taken from the star point. If the voltage of each phase conductor to neutral is V then line to line voltage between the phases will be √3V. The 3 phase 4 wire

The Kirchhoff’s Laws are very useful in solving electrical networks which may not be easily solved by Ohm’s Law. In this article, I will describe these laws and will show some of Kirchhoff’s voltage law examples to make these laws easily understandable. Kirchhoff’s Laws, two in number, are as follows: Kirchhoff’s Current Law: This law

Normally, no current flows through insulators or dielectric materials. However, when the voltage applied to such materials exceeds a certain value, then it breaks down and a heavy electric current (much larger than the usual leakage current) flows through it. If the insulator is a solid medium, it gets punctured or destroyed. Dielectric Strength Definition