Sunday, November 7, 2010


The generators are  useful machines that do a lot of good things. In this composition, I  would like to tell you some information about the generators.Today the generators are made in a wide range of sizes, from very small machines . Generators are for the production of electricity, and produce most of the electricity  that is used by people. Electric generators are essentially very large quantities of copper wire spinning around inside very large magnets, at very high speeds.The generator can be small in size, so that it can be held in one hand. These generators are used in some small scientific equipment to generate enough electricity to move the pointer, and may be the size of a generator is greater than the size of a house, and can provide more than a million electrical power houses. For example: when  my family and I go to the desert we take a lot of things from the house like: TV, Video , Air conditioner , tent and fire.


The generator does not introduce energy, but it converts mechanical energy into electrical energy, and engineers usually refer to it as a mechanical tool, which manages the basic generator engine. In order to get additional electricity from the generator it is essential to make additional mechanical energy.



http://en.wikipedia.org/wiki/Electrical_generator



 The dynamo was the first electrical generator capable of delivering

power for industry. The dynamo uses electronic  to

convert mechanical rotation into a pulsing direct

electric current through the use of a commutator. The first dynamo

was built by Hippolyte Pixii in 1832.
Through a series of accidental discoveries, the dynamo became the
source of many later inventions, including the DC electric motor,
the AC alternator, the ACsynchronous motor, and the rotary
converter.
A dynamo machine consists of a stationary structure, which
provides a constant magnetic field, and a set of rotating windings
which turn within that field. On small machines the constant
magnetic field may be provided by one or more permanent magnets;
larger machines have the constant magnetic field provided by one
or more electromagnets, which are usually called field coils.
Large power generation dynamos are now rarely seen due to the
now nearly universal use of alternating current for power
distribution and solid state electronic  power conversion.
But before the principles of  were discovered, very large direct-
current dynamos were the only means of power generation and
distribution. Now power generation dynamos are mostly a curiosity.
This is information about the generator. The device is simple to install but of great interest, and has many important uses ranging from children's games through the household electrical devices.



Bibliography



http://0-www.accessscience.com.library.hct.ac.ae/content.aspx?searchStr=the+generators&id=284800




http://en.wikipedia.org/wiki/Electrical_generator




http://science.howstuffworks.com/electricity2.htm



The similarities and differences between UAE and Kuwait and Oman


The United Arab Emirates lies on the eastern part of the Arabian Peninsula and the coastline extends along the Arabian Gulf and the Gulf of Oman and its capital is Abu Dhabi.
The State of the United Arab Emirates,was established in the second of December in the year 1971. A federal state comprising seven emirates are: - Abu Dhabi, Dubai, Sharjah, Ras Al Khaimah, Umm Al Quwain, Ajman and Fujairah.
It is the fourth largest producer of oil in the world  . The crime rate it is one of the lowest in the world .The spread of education and the spread of health services and
the evolution of communications. Are important developments the  Arabs were in the past engaged in agriculture and diving for pearls and fishing.








http://www.ncema.ae/ar/About-UAE%20.aspx










Kuwait is situated in the northeastern

part of the Arabian Peninsula, at the

head of the Persian Gulf. Kuwait is

bordered on the north and west by Iraq,

on the south and west by Saudi Arabia,

and on the east by the Persian Gulf. For

many years Kuwait was a small emirate

whose economy centered on sea trade

and especially pearl exports. The
discovery of oil in the 20th
 century

transformed all aspects of Kuwaiti

society. Kuwait is one of the world's

smallest countries, occupying 17,818 sq

km (6880 sq mi). The greatest distance

from north to south is 200 km (120 mi)

and from east to west 170 km (110 mi).

Kuwait´s official language is Arabic,

which is spoken by all citizens. Both Arabic and English are taught

in Kuwaiti schools. Islam is the official religion, 85% Kuwaiti

citizens are Muslim. 15% others. In 1997 Kuwait had an estimated

population of 1,834,269. Slightly fewer than 40 percent of the

people are native Kuwaitis, while the remainders of the population,

for the most part, are foreign workers.




( http://www.arab.de/arabinfo/kuwait.htm )



















The sultanate of Oman lies on the southeastern coast of the Arabian Peninsula.  The Sultanate of Oman has attractive tourist sites, valleys, deserts, beaches, and mountains that make it distinct from other GCC states. Jebel Shams is the tallest mountain, the highest point in the region, also famous for the existence of places for camping, too. Most of the major shopping centers are in Muscat, the capital, where  the Muscat City Centre is the largest of these centers, and other tourist activities are sand skiing, mountain climbing, camel racing, and camping.

http://www.al-wfa.com/vb/t6728.html
Bibliography

http://0-www.accessscience.com.library.hct.ac.ae/search.aspx?searchStr=uae


http://0-www.accessscience.com.library.hct.ac.ae/search.aspx?searchStr=kuwait




http://0-www.accessscience.com.library.hct.ac.ae/search.aspx?searchStr=oman