Tuesday, January 19, 2010

Do You Know What Alternating Current Is?

Do you know what alternating current is? Electrical AC (alternating current) occurs when charge carriers in a conductor or semiconductor periodically reverse their direction of movement. Household utility flow in most countries is AC with a frequency of 60 hertz (60 complete cycles per second), though in some countries it's 50 Hz. The radio-frequency ( RF ) flow in antennas and transmission lines is another example of AC. Flexible alternating stream (AC) transmission systems, or FACTS, incorporate high-flow and high-voltage power electronic devices. AC is employed for transmission as a result of transformers will step it up to high voltage for long distance, and all the way down to low voltage for native distribution and use. Power is (naively) the merchandise of current and voltage, however resistance losses are proportional to stream SQUARED. Stepping up to high voltage cuts the current and therefore the losses; even making an attempt to distribute one hundred ten volts for many miles would require wires thus significant you'd go broke paying for every the copper.

No comments:

Post a Comment