DEFINITIONS OF ENGINEERING/ENGINEERING TECHNOLOGY/INDUSTRIAL TECHNOLOGY
ENGINEERING is the profession in which a knowledge of the mathematical and natural sciences gained by study, experience, and practice is applied with judgment to develop ways to utilize economically the materials and forces of nature for the benefit of mankind.
ENGINEERING TECHNOLOGY is the part of the technological field that requires the application of scientific and engineering knowledge and methods combined with technical skills in support of engineering activities; it lies in the occupational spectrum between the craftsman and the engineer at the end of the spectrum closest to the engineer.

How Electrical Technology Began

Electricity was first discovered in the 1700s by Benjamin Franklin who performed the first electricity experiment in history. Since then, many others including Ampere, Faraday, Ohm, and Oersted managed to develop simple electrical devices after having understood the basic electrical principles. Much later, in 1904, Fleming's diode opened a new horizon for the advent of electronic components.
Electric devices, vehicles and communicational systems have been available since then; home appliances, airplanes, computers, automobiles, spacecraft, medical equipment and many more have become part of our everyday life. In just three hundred years, electrical technology has managed to revolutionize the way we live, transform the urban and rural environment, and bring about problems unknown to former generations.

Defining Electrical Technology

Electrical technology deals with all machines, tools, devices, and systems in which a current or a flow of electrons takes place through conductors and metals. It involves the design and development of high-voltage systems and components such as motors, generators, heaters, electrical power transmission and distribution systems, radio wave and optical systems, converters, and control systems for operating light and heavy machinery. Almost all of our low or high-tech gadgets today involve the use of electrical current to operate, making electrical energy the main- and possibly the only- factor to define what electrical technology is. 

The Difference between Electrical and Electronic Technology

People often find it hard to define the difference between electrical and electronic technology. While electrical technology focuses on the design and production of high-voltage systems, electronic technology is mostly involved in low-voltage applications in which the flow of electrons takes place through semiconductors, rather than conductors or metals.
Speaking in terms of engineering, electronic engineering is actually a sub-field of electrical engineering, dealing with the fields of information, communication, and electronic components. By contrast, electrical engineering focuses on larger-scale schemes, power and control systems, robotics, manufacturing processes, etc. Electronic engineers are mostly involved in the design and monitoring of integrated circuits and electronic components (transistors, diodes, etc.) for a variety of applications such as televisions, computers, mobile phones, radios, DVD, MP3 players, and many others.
The design of an electrical system, most of the time, entails the use of electronic components, and this fact makes people use the terms “electrical” and “electronic” technology interchangeably. Both disciplines however, do require knowledge of mathematics and science and rely on the same engineering principles and same analytical skills to provide their high-performance products and services.

Generation of a Sine Wave of Voltage

There are two facts that the voltage developed in a coil of a generator changes; the first one is it changes in magnitude from instant to instant as varying values of flux are cut per second and the other one is it changes in direction as coil side change positions under north and south poles, implies that alternating emf is generated. This means that the voltage is maximum as mentioned in our last topic here when the position of the coil is just like shown in the figure below:

Initial position of the coil
and will diminish to zero as the coil rotates clockwise toward the position as shown below:

As the coil rotates clockwise
Then, as the coil continues to rotate clockwise, the polarities will change. Assuming uniform flux distribution between north and south poles, the generated voltage in a coil located from the vertical will be:
- See more at: http://electricalengineeringforbeginners.blogspot.in/2013/06/generation-of-sine-wave-of-voltage.html#sthash.MGXZc1tN.dpuf


Generation of a Sine Wave of Voltage

There are two facts that the voltage developed in a coil of a generator changes; the first one is it changes in magnitude from instant to instant as varying values of flux are cut per second and the other one is it changes in direction as coil side change positions under north and south poles, implies that alternating emf is generated. This means that the voltage is maximum as mentioned in our last topic here when the position of the coil is just like shown in the figure below:

Initial position of the coil
and will diminish to zero as the coil rotates clockwise toward the position as shown below:

As the coil rotates clockwise
Then, as the coil continues to rotate clockwise, the polarities will change. Assuming uniform flux distribution between north and south poles, the generated voltage in a coil located from the vertical will be:
- See more at: http://electricalengineeringforbeginners.blogspot.in/2013/06/generation-of-sine-wave-of-voltage.html#sthash.MGXZc1tN.dpuf

Generation of a Sine Wave of Voltage

There are two facts that the voltage developed in a coil of a generator changes; the first one is it changes in magnitude from instant to instant as varying values of flux are cut per second and the other one is it changes in direction as coil side change positions under north and south poles, implies that alternating emf is generated. This means that the voltage is maximum as mentioned in our last topic here when the position of the coil is just like shown in the figure below:

Initial position of the coil
and will diminish to zero as the coil rotates clockwise toward the position as shown below:

As the coil rotates clockwise
Then, as the coil continues to rotate clockwise, the polarities will change. Assuming uniform flux distribution between north and south poles, the generated voltage in a coil located from the vertical will be:
- See more at: http://electricalengineeringforbeginners.blogspot.in/2013/06/generation-of-sine-wave-of-voltage.html#sthash.MGXZc1tN.dpuf
 

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