electrical supply catalog

The electric power line enters our house through three wires. One is called the earth wire or ground wire. This carries no electricity. The earth wire is connected to a large metal plate buried deep in the ground. The remaining two wires carry electricity. One of these..

Domestic Electric Circuit - Electric power is usually generated at places which are far from the places where it is consumed. Distribution of Electricity from Grid The power is transmitted over long distances at high voltage to minimize the loss of energy during transm..

Electric power is usually generated at places which are far from the places where it is consumed. Distribution of Electricity from Grid The power is transmitted over long distances at high voltage to minimize the loss of energy during transmission. For a given electric..

>The earth wire is much thicker in size and is made of copper. One end of it is connected to a copper plate buried deep under the earth. The earth connection is made to the electric meter and then to the main switch. In our homes, we receive supply of electric power th..

Rating of Electrical Appliances - Generally electrical appliances such as an electric bulb, geyser, heater, etc. are rated with power and voltage. A bulb rated as 100W - 250V, means that when a bulb is lit on a 250V supply, it consumes 100 W of electrich..

07. - Two identical cells of EMF 1.5 V each joined in parallel provide supply to an external circuit consisting of two resistors of 17 W each joined in parallel. A very high resistance voltmeter reads the terminal voltage of the cell to be 1.4 V. What is the internal resistance of each ce..

Generators are devices that produce electricity by converting mechanical energy into electrical energy. It works on the principle of 'electromagnetic induction' [Electromagnetic Induction is the creation of a voltage or current due to change in magnetic field]. Most of the ..

In an electrical circuit, energy is supplied by the source of EMF, stored by the capacitive and inductive elements and dissipated in resistive element..

Do we use dry cells for operating electrical appliance? It is not impossible to tap continuous supply of energy from electrochemical cells. Electrical circuits in homes, factories and offices receive such energy form local power companies. In most countries the e..

It is an external source, which supplies energy to obtain population inversion. The pump can be optical, electrical or thermal. In the ruby laser, we use optical pumping. In the He-Ne laser, we use electric discharge pumping. The energy supplied by the pump ..