Why did AC electric generators take over DC in commercial power generating plants? 10 points?

electric generators

Why did AC electric generators take over DC in commercial power generating plants? 10 points?
The AC electric motor had not been devised just yet, and Eddison's lighting system was DC. Why did they convert?

10 points for best answer. Thanks in advance.

Best answer:

Answer by Scott L
For the simple reason that A/C can generate much higher power levels than DC. It was one of Edisons more notable failures. You will notice that today DC is used only in low power situations

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8 Responses to Why did AC electric generators take over DC in commercial power generating plants? 10 points?

  1. GibsonEssGee

    AC was considered safer and is easier to distribute.

  2. Schnarr

    Easy, DC can only transfer current short distance and is not very stable. AC can be transmitted long distance and is relatively stable.

  3. Timon A

    DC looses power rapidly over distances like those involved in a power grid, AC doesn’t and AC is much easier to convert to higher and lower voltages with a transformer.

  4. Laine

    Because they are better. Nikolai Tesla is responsible for their adoption by power generating plants because he proved that they could safely send electricity over long distances. DC would cost too much and was less efficient to implement over a wide area. Edison was a proponent of Direct Current and did everything he could including spreading lies about Alternating Current as being deadly and dangerous. The reason it was adopted was because the electric companies bottom lines, were more important to them than Mr. Edison’s ego.

  5. kai_raitei007

    because of ac signals can be used in long distance transmissions.. While DC cannot.. The loss in ac can be recovered by simply adding a lead or lag circuit.. While loss in DC cannot be recovered.. And as you have noticed, the cross section of the wire increases as the current transmitted increases, DC will not be economical as ac.. Example: a certain wire can carry a maximum amount of current. Now, using DC, this will end up using limited amount of DC which losses cannot be recovered. Now using ac, a high current signal can be converted to a high voltage-low current signal which losses can be recovered and this signal can be converted back to a low voltage-high current signal..

  6. Frosty

    edison tried to stay with DC however this caused problems in transmitting electricity over any long distance.

    With the Tesla designed ac system voltages could be transformed up for transmission over distance thus avoiding voltage drop. then transformed down to the required voltage.

    Edison tried to make AC seem dangerous>> he promoted AC to be used in the electric chair then advertised his DC as safe electricity and AC as so dangerous that it is used to kill people.

    read>> “the man who invented the 20th Century” the biography of Nicola Tesla. He invented most of the electrical stuff that we now take for granted>> others got the Kudos

  7. BenWood

    AC electric generators took over DC in commercial power generating plants because of the work of Nikola Tesla. I found a short version of how this came about and included it below. It can be found at the following site:


    “Nikola Tesla was born on July 10, 1856 in Smiljan, Lika, which was then part of the Austo-Hungarian Empire, region of Croatia. His father, Milutin Tesla was a Serbian Orthodox Priest and his mother Djuka Mandic was an inventor in her own right of household appliances. Tesla studied at the Realschule, Karlstadt in 1873, the Polytechnic Institute in Graz, Austria and the University of Prague. At first, he intended to specialize in physics and mathematics, but soon he became fascinated with electricity. He began his career as an electrical engineer with a telephone company in Budapest in 1881. It was there, as Tesla was walking with a friend through the city park that the elusive solution to the rotating magnetic field flashed through his mind. With a stick, he drew a diagram in the sand explaining to his friend the principle of the induction motor. Before going to America, Tesla joined Continental Edison Company in Paris where he designed dynamos. While in Strassbourg in 1883, he privately built a prototype of the induction motor and ran it successfully. Unable to interest anyone in Europe in promoting this radical device, Tesla accepted an offer to work for Thomas Edison in New York. His childhood dream was to come to America to harness the power of Niagara Falls.

    Young Nikola Tesla came to the United States in 1884 with an introduction letter from Charles Batchelor to Thomas Edison: “I know two great men,” wrote Batchel

  8. krk

    Almost all electrical appliance run on AC.

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