A complete Electrical Engineering portal
Conventional energy is obtained from the conventional energy resources such as coal, diesel, gas and nucleus. These are non-renewable resources and may exhaust in few decades if consumed at the current rate. The burning of fossil fuels produces harmful gases such as nitrous oxide, carbon monoxide, sulphur-di-oxide etc and pollutes the environment. The comparison of various … Read more
Metal halide (MH) lamp provides high efficiency, long service life and excellent colour rendition. It consists of an arc tube enclosed in a glass chamber made up of borosilicate glass. Arc tube is also called as discharge tube or “burner”. The arc tube consists of argon gas, mercury and metal salts such as sodium iodide. They operate at higher temperatures and pressures.Ballast is used to supply a high starting voltage. The ballast also regulates the lamp starting current and lamp operating current.
Modern fridges are available in various sizes with different features incorporated by the manufacturers. Apart from these features the basic principle of refrigeration of course remains the same. The method of deployment hasn’t changed much since from the aforementioned Frigidaire unit in 1923.It is a property of a circuit element called inductor to store energy in the magnetic field when current passes through it. A basic inductor can be made by simply twisting a coil of a certain length. If current passes through an inductor, an electro magnetic field is formed. Any change in the magnitude … Read more
There are two types of charges namely positive charge and negative charge. As we all know these charges are opposite and they attract . A work is done to separate these two charges through a specific distance. When these two charges are separated from each other certain amount of energy is stored in them in … Read more
Fuel cells cleanly and efficiently convert chemical energy from hydrogen-rich fuels into electrical power and usable high-quality heat in an electrochemical process that is virtually absent of pollutants. What are fuel cells? Fuel cells are non-polluting energy resources. It cleanly and efficiently converts chemical energy from hydrogen-rich fuels into electrical power. Each fuel cell consists … Read more
Microprocessor It has many support devices like ROM, Read-Write memory, Serial interface, Timer, I/O ports etc. All these support devices are interfaced to microprocessor via a system bus. All support devices in a microprocessor based system are external. The system bus is composed of an address bus, data bus and control bus. Microcontroller All the support … Read more
Air conditioning works continuously and has refrigerant continually circulating around a sealed system. Most automotive A/C systems are made up of six main components:-
The easiest way to explain how the system works is to trace the refrigerant as it flows through the system:-
Speaker is a device which converts electrical signal into sound waves. By
its property, sound is made when an object makes the particles around it
vibrate. These vibrations travel through the air, and reach our ears. Our brain
interprets this motion as sound. The amplitude of the waves corresponds to the volume level we hear and the frequency decides the nature of sound.
