Author: Waseem Khan
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Importance of Electricity in our Daily lives and its impact on Modern Society
Generally, energy is the basic necessity for the economic development of a country. Many functions necessary to present day stop when the energy supply is interrupted. It is practically impossible to estimate the actual magnitude of energy played its part in the building of present-day development. The availability of huge amount of energy is due…
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Why is Power factor so important in Electrical Power System ?
Generally, we can define the term power factor in three ways; “The cosine of an angle between current and voltage of an Ac circuit is called power factor” “The ratio between the resistance and total impedance of an Ac circuit is called power factor” “The ratio between the active power and apparent power is called…
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Tutorial Lecture on The Theory of Electron Emission
Basic Concept of Electron Emission The phenomenon of emitting electrons from the material surface into surrounding by using a specific external energy is called the Electron Emission. As we that every metal is made of those atoms which are connected in crystal shape very tightly to each other. All electrons are bounded by their atoms…