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Showing posts with label theory. Show all posts

Tuesday, April 2, 2013

LEARNING ELECTRICAL CIRCUIT THEORY

However research on student learning and understanding of electric circuit theory is still in its infancy. Student’s conceptions in circuit theory and electricity are not as well investigated as those in mechanics. To our knowledge very little research has been done on student understanding of more advanced topics in DC- theory such as superposition, source transformation, mesh-current and node-voltage methods or on students’ understanding of AC- electricity, periodic signals and on transients. This work has been done in the context of an introductory course in electric circuit theory for students in an electrical engineering program at a major Swedish university.

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Friday, March 29, 2013

THE ELECTRICAL BASIC THEORY Season 1

Direct current generator

It is a mechanical energy converter engine becomes electric energy, while actuator from generator called as prime mover is earning is in the form of water turbine, steam, diesel engine etc. The work principle is based on hokum Faraday where conductor cuts magnet dislocation stress field and induction will arise strain difference and existence of commutate attached at generator axis hence at generator terminal there will be direct voltage.

Accumulator or Battery

Battery or storage battery is an electrical battery where in it to take place electrochemistry process which reversible (can feed back) with the high efficiency. The concerned electrochemistry process reversible, be in battery can take place chemical distorting process become electric power (evacuation process), conversely from electric power becomes chemistry energy (recharging by the way of regenerate from electrodes) what used, that is by overcoming electric current in direction (polarity) which at the opposite in battery. Every this battery consisted of two kinds of different electrode, that is positive electrode and negativity electrode plunged in a chemistry solubility.

Electrical Current

It is flows it electron in continue at conductor as result of difference of number of electron at some locations which number of the unegual electrons. Set of electric current is Ampere. 1 current ampere to be the flow electron 628x1016 or equal to 1 Coloumb per second pass a upper side conductor.