Basics 2 min read
Resonance in Series Circuits
Series circuit (a) Circuit diagram The circuit, with resistance R, inductance L, and a capacitor, C in series (Fig…
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Basics 2 min read
Solution of Steady State Current in Circuits Fed from Single phase AC Supply
Elementary Circuits 1. Purely resistive circuit (R only) The instantaneous value of the current though the circuit (Fig a) is…
Basics 2 min read
Periodic Voltage or Current Waveform
Average value The current waveform shown in Fig a, is periodic in nature, with time period, T. It is positive…
Basics 1 min read
Generation of Sinusoidal (AC) Voltage Waveform
Schematic diagram for single phase ac generation Schematic diagram for single phase ac generation A multi-turn coil is placed…
Basics 3 min read
Response of a series R-L-C circuit due to a dc voltage source
Consider a series R – L – C circuit as shown in fig, and it is excited with a dc…
Transmission and distribution 3 min read
Capacitor and its behaviour
Figure shows a capacitor consists of two pieces of metal (the plates) separated from each other by a good insulator…
Basics 1 min read
Energy stored in an inductor
Let us turn our attention to power and energy consideration for an inductor. The instantaneous power absorbed by the inductor…
Basics 1 min read
Study of dc transients and steady state response of a series R-L circuit.
Ideal Inductor: Fig. shows an ideal inductor, like an ideal voltage source, has no resistance and it is excited by a…
Basics 2 min read
Inductance calculation from physical dimension of coil
A general formula for the inductance of a coil can be found by using an equivalent Ohm’s law for magnetic…
Basics 3 min read
Study of DC transients in R-L and R-C circuits
So far we have considered dc resistive network in which currents and voltages were independent of time. More specifically, Voltage…
Basics 3 min read
Maximum Power Transfer Theorem
In an electric circuit, the load receives electric energy via the supply sources and converts that energy into a useful…
Basics 2 min read
The procedure for applying Thevenin’s theorem
To find a current through the load resistance (as shown in fig.(a)) using Thevenin’s theorem, the following steps are followed: (a) Step-1: Disconnect…
