Electrical Terms

Tellegen’s Theorem

Tellegen’s Theorem states that the summation of power delivered is zero for each branch of any electrical network at any instant of time. It is mainly applicable for designing the filters in signal processing. It is also used in complex operating systems for regulating stability. It is mostly used in the chemical and biological system …

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Superposition Theorem

Superposition theorem states that in any linear, active, bilateral network having more than one source, the response across any element is the sum of the responses obtained from each source considered separately and all other sources are replaced by their internal resistance. The superposition theorem is used to solve the network where two or more …

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Different Methods of Finding Thevenin’s Resistance

Thevenin’s theorem gives the mathematical technique of replacing the given network by a single voltage source by a resistance in series. The different methods of finding Thevenin’s Resistance or internal impedance are as follows: For Independent Sources – The most common method of finding the equivalent Thevenin’s Resistance (RTH) or the internal impedance of any linear, …

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Thevenin’s Theorem

Thevenin’s Theorem states that any complicated network across its load terminals can be substituted by a voltage source with one resistance in series. This theorem helps in the study of the variation of current in a particular branch when the resistance of the branch is varied while the remaining network remains the same. For example …

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Source Transformation

Source Transformation simply means replacing one source by an equivalent source. A practical voltage source can be transformed into an equivalent practical current source and similarly a practical current source into voltage source. Any practical voltage source or simply a voltage source consists of an ideal voltage source in series with an internal resistance or …

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Capacitance

Capacitance is defined as the capability of an element to store electric charge. A capacitor store electric energy in the form of the electric field by the two electrodes of a capacitor, one as positive and other as negative. In other words, capacitance is a measure of charge per unit voltage that can be stored …

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Inductance

The Inductance is the property of a material by virtue of which it opposes any change of magnitude and direction of electric current passing through the conductor. In other words, it is the property of the coil in which the emf is induced because of the variation of flux. The inductance is added in the …

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Resonant Frequency

The resonant frequency condition arises in the series circuit when the inductive reactance is equal to the capacitive reactance. If the supply frequency is changed the value of XL = 2πfL and XC = 1/2πfC is also changed. When the frequency increases, the value of XL increases, whereas the value of XC decreases. Similarly, when …

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