Abu Dhabi Men’s College
Electrical
Name: Majed Jaafa Amer
ID: H00155005
Section: CEL
Course: ENGL N264
Instructor: Mr. Hedley
Butterfield
Electrical
Electrical engineering generally deals
with electricity, electromagnetism and electronics. This field was unknown
until the electric telegraph and electrical power supply came up in the late
nineteenth century. Now electrical engineering has expanded its scope in the
field of electricity which includes power, electronics, signal processing,
control systems and telecommunications. There are many famous scientists:
Michael Faraday the founder of electric motor technology, Thomas Edison, who
built the first large scale electrical network and Nikola Tesla who designed a
long distance electrical transmission network. We are using electricity in many
areas. For example, we need electricity for lighting houses, cooking food,
heating water and other things. In this report I am going to write about what
are the most important changes or developments in the electrical field.
There are many changes or developments in
electrical engineering, but I am going to write one change that happened in
electrical engineering and two developments that happened in electrical
engineering.
Sources of energy
First of all, if we go back five years
ago, we will see that the sources of energy were limited. They depended upon
oil to get energy. This energy someday will disappear (non-renewable energy) so
that electrical engineers do many researches to find an alternative energy
(renewable energy). From these researches they find that from the light of the
sun, they can get energy which is called solar energy. Also they find that from
the power of wind, they can get energy. They built a wind turbine and a
rotation of a blade makes the wind turbine produce electricity. Another way we
can get energy is from a river by building a dam or a flume. This river falls a
high distance and hits the turbine which produces electricity. Finally,
scientists find that we can produce electricity from garbage or renewable
resources such as vegetation and sugar cane.
Old Devices and
New Devices
Electrical
engineers use many different devices in their job. For example, motors which are
used to change electrical energy to mechanical energy, generators which convert
mechanical energy to electrical energy and voltmeters which measure electrical
potential in an electric circuit. Many years ago motors and generators were so
big, needed a lot of maintenance, were expensive, difficult to handle, needed
more time to find a problem and manual control, but nowadays with a new
technology motors and generators become small size, easy to maintain; we can
control them from far away using PLC (programmable logic controller); they are
not expensive, easy to find a problem and easy to handle. For the old voltmeter,
it was difficult to use, the range was between 0V – 230V; it was not accurate,
not safe and quickly damaged if there was high voltage because there was no
fuse inside it, but now a voltmeter has become more accurate because it has a
digital number better than an analog voltmeter; it can detect a small amount of
volt and high voltage; it is safer because it contains a fuse inside it.
Electric Car
A lot of people
drive a car that moves with gasoline. This kind of car is making a lot of
pollution, but with new technology there are some cars can be charged like when
you charge your laptop. These cars cause less pollution than gasoline cars and
are friendly to the environment. A Subaru R1e is an example of an electric car. This car can be
charged in your home and go up to 50 miles and the top speed for this car is 62
miles per hour.
Conclusion:-
In conclusion,
electrical engineering is one of the most important subjects in the world. Our
life has become more comfortable because of it, for example, we can heat water,
light our home and cool our room. Electrical engineering has made many useful
things to make our life better.
Bibliography:-
ELECTRICALENGINEERINGONLINE.NET (2012).
What is Electrical Engineering? Retrieved from
