transmission losses

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 power, th..

An optical fiber is a dielectric wave guide that transports light signals from one place to another just as a twisted-wire pair or a coaxial cable transports electrical signals. It consists of a central core within which the propagating electromagnetic field is confined and which is surrounded by a..

This heating is inevitable in any electrical circuit. Since the energy lost by the flowing charges ends up as disorderly thermal motion, the phrase 'ohmic dissipation' is also used to describe it. Often, this is an undesirable effect. For example, in electric circuits, the heat produced in a small ..

In long-distance lines, losses are so high that satisfactory operation becomes impossible without the use of amplification. Amplifiers for telephone service are known as repeaters, and they must of course function in both directions along the line. Repeater stations are ordinarily install..

The transmission lines used in telephony are of two kinds: open- wire and cable. The open-wire lines are gradually being superseded by cable construction, either overhead or underground, for two principal reasons. In the first place, many more circuits can be accommodated-there is a stand..

L.C. Oscillation - Capacitors and inductors are capable of storing energy in the electric field and magnetic field respectively. No A.C elements i.e., capacitor, inductor are pure. In other words each of them do have some resistance. The charges or current through these elements lose their energy a..

For a step up transformer k>1 and for a step down transformer,..

Domestic Electric Circuits - Electric power is usually generated at places which are far away from the places where it is consumed. At the generating station, the electric power is generated at 11,000 volts. This voltage alternates at a frequency of 50 Hz. The power is transmitted over long distanc..

Disease Mode of Transmission Symptom Prevention Control Malaria Caused by protozoan plasmodium through the bite of the female anopheles mosquito High fever, rigorous which is repeated on or 4th day Prevent mosquitoes from biting and prevent them from breeding A quinine..