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    AUSTRALIA TERRITORY LEGALIZES SAME-SEX MARRIAGE
    October 22, 2013 - Australia

    The Australian Capital Territory parliament voted to legalize same-sex marriage. It was the first part of the country to legalize same-sex marriage. In 2004, marriage was defined between a man and woman by the Australian federal government.

    CUBAN MISSILE CRISIS
    October 22, 1962 - United States

    In a speech to the American people John F Kennedy told the audience that American Spy Planes had discovered Soviet Missile bases in Cuba, and that these missile bases when complete would be able to launch missiles capable of striking a number of US cities, he told the people that America could not allow these missile bases to be finished and would pursue any action necessary including military action to protect the nation. He informed the American people that the first stage was to place a naval quarantine on the waters around Cuba. This is known in history as the " Cuban Missile Crisis " and took the world to the brink of nuclear war with US forces going to DEFCON 2 in preparation to full scale war. America realized that the missile launchers construction was continuing and decided that a full scale invasion of Cuba would be needed to stop the missile bases being completed, the Soviets then transmitted a proposal that all missile bases in Cuba would be dismantled in exchange for the United States not invading Cuba and dismantling Americas missile bases in Turkey.

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Electric Transformers :

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Do you want to know more about electric transformers? Every home and business is affected by transformers. Businesses use them to get the right power they need. Transformers are use in all high tech equipment. Do you want to know the different types?

ARTICLE CONTENT :

The role of electrical transformers is to switch voltage from one value to another; normally from higher to lower voltage or vice versa. They consist of two sets of coils or windings that are connected to a ferromagnetic core. There are two types of coils?the primary and secondary conductors.

A changing current in the primary conductor produces alternating magnetic fields in the core, which in turn multiples the fields and couples most of the flux with the secondary conductor. This incites the alternating voltage or EMF in each of the secondary conductor.

The cores can be customized as toroidal or laminated. The toroidal has several advantages such as producing low magnetic leakage, close flux path, low noise and smaller core size, lighter and more efficient. They have copper wires wrapped around a cylindrical core preventing leakage of magnetic flux. The magnetic flux is not very influential on other components.

On the other hand, the laminated core is composed of sheets of magnetic material that is insulated from one another with a non-conducting material such as varnish, producing a core that decreases electrical losses.

Electrical transformers can be configured in two ways. You can choose single-phase or three-phase. In switching the voltage level, the principle of magnetic induction between coils is to transfer voltage between coils from the electricity that flows through them. The transformers are passive devices that initiates the transformation of alternating current or AC electrical energy from one circuit into another through electromagnetic induction.

Many homes and businesses have transformers to transfer electricity from power plants. The voltage of the transformers at the power plants is normally high. As they reached the substation, the voltage is lowered. When they reached smaller transformer, the voltage is lowered again. The adjustment in voltage is a continuous process, which only stops when the power reaches the useable level.

The inward voltage of electrical transformers is very crucial. There are three general frequencies that are easy to obtain. These are the 50 Hertz, 60 hertz, and 400 hertz. If you are in Europe, the standard power is 50 hertz. In North America, the average power is 60 hertz. The 400 hertz is set aside for high-capacity purposes like aerospace technologies.

In estimating transformers, it is important to consider power specifications such as highest ratings of the next current, the secondary current ratings, highest power rating, the voltage rating, output type and output choices, such as AC or DC.

Transformers come in several types. There are power transformers, current transformers, step down transformers, low voltage transformers, distribution transformer, instrument transformers, general purpose transformers and automatic transformers.

The power transformers have several configurations based on segments and links. The distribution transformer decrease the primary voltage of the electric distribution system so that it can be used by customer. Auto electrical transformers are smaller in size, weigh less and have better voltage stability as well as overload tolerance.

The manner by which the electrical transformers function has changed. They made life easier for people as they transfer power efficient and more economical. The electricity that is available in your house passes through many different transformers before it is usable as a low voltage.

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  • Relectric
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  • Rudy SilvaOwner :
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  • November 30, 2014Date Added :
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