Tricky but Easy Electrical Engineering!
Self Inductance or Inductance is defined as the property of a material due to which it opposes the flow of current through it. It is usually denoted by ‘L’ and its SI unit is Henry. How a material possess such property? To understand, let us consider a coil having N number of turns and connect … Read more
When the potential difference between the terminals of two or more inductors are same, it is said that they are connected in parallel. As potential difference or voltage across the terminals are same therefore current flowing through the inductors may or may not be same. If the parallel connected inductors have the same value of … Read more
Mutual Inductance Mutual inductance is defined as inductance of a circuit caused by mutual coupling with other circuit. Mutual coupling of two coils means that magnetic field produced by one coil is linking / crossing the other coil and vice versa. Mutual Inductance is generally denoted by letter M and its SI unit is Henry. … Read more
Magnetization curve or saturation curve is basically the graphical relationship between the magnetic flux density B and magnetic filed intensity H for a given magnetic material. As we know that, B = μ0μrH where μ0 = Permeability of free space = 4πx10-7Tm/A μr = Relative Permeability of material Thus by using the above equation, we … Read more
For understanding the reason, why current through and Inductor lags behind Voltage across the Inductor, we will first go mathematically then we will understand the concept analytically. Let us consider a purely inductive circuit as shown in figure below. As shown in the figure above, an inductor of value L Henray is connected with an … Read more
In this post I will focus on the working principle of the Bipolar Junction Transistor assuming that you are already aware of the construction details of the BJT or simply Transistors. The basic operation of the transistor will be described using the pnp transistor. The operation of the npn transistor is exactly the same if … Read more
The clamping network is one that clamps a signal to a different DC level. The network contains a capacitor, a diode, and a resistive element, but it can also have an independent DC supply source to introduce an additional shift in voltage level. The magnitude of R and C to be used in the Clamper … Read more
I am writing this post for those who are going to appear for the GATE-2019. If you see the Previous Year Question Papers, you will find that finding RMS for a composite wave or for an arbitrary function is asked frequently. Therefore it is quite important to know “How to find RMS value”. I will … Read more
As we know any balanced Star connected system can be completely replaced by an equivalent Delta connected system. This means that a three phase Star connected balanced system having line voltage VL and line current IL can be replaced by an equivalent Delta connected system having phase voltage VL and phase current IL / 1.732. … Read more
Star-Delta and Delta-Star conversion concept is very basic but most important concept for Electrical Engineers. Be it day to day calculation or solving some numerical of competitive exam, we definitely need this conversion. In this post we will be discussing this Star to Delta and Delta to Star Conversion. For understanding this conversion, we will … Read more