Wheatstone Bridge Working Principle Wheatstone devised a bridge-arrangement of resistances by which the resistance of a given conductor can be determined. This arrangement is called the ‘Wheatstone bridge‘. In the arrangement, four resistances are so connected as to form a parallelogram. In one diagonal of this parallelogram is connected a galvanometer and in …
A nickel-cadmium cell has two plates. The active material of the positive plate (anode) is Ni(OH)4 and the negative plate (cathode) is of cadmium (Cd) when fully charged. The electrolyte is a solution of potassium hydroxide (KOH) with a small addition of lithium hydrate which increases the capacity and life of the battery. The specific …
Hi friends, In this article, I am going to discuss the nickel-iron battery working principle and construction., and compare its features with a lead-acid battery. So keep reading. The Nickel-Iron alkaline cell was developed by an American scientist Thomson A. Edison in 1909. Therefore it is also known as Edison-cell. Nickel Iron …
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 as follows: To know the …
In this article I am discussing the neutral wire function 3 in phase 4 wire system. After reading this article you will be able to understand some very amazing facts about need of neutral wire in three phase distribution system. 3 Phase 4 Wire System The power from generating stations is transmitted over …
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 Kirchhoff’s Voltage …
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 …
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Hi friends, in this article, I am going to discuss about lead acid battery charging and hope my article will increase your knowledge about lead acid batteries. Lead-acid batteries are charged by: Constant current method, and Constant voltage method. In the constant current method, a fixed value of current in amperes is passed through …
Hi friends, in this article, I am discussing about the lead acid battery charging and discharging equations and hope you will find it informative and helpful. A lead-acid battery is the most inexpensive battery and is widely used for commercial purposes. It consists of a number of lead-acid cells connected in series, parallel or …
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When the voltage is applied to an electrical circuit, the free electrons starts moving. When they are moving they collide with the other atoms and molecules of the substance. These collisions offer opposition to the flow of electrons or current called electric resistance. Electric Resistance Definition | Formula | Explanation Hence, the opposition …
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