Joule’s Law of Heating
We know about the heating effect of current, when it flows through a circuit due to collision between electrons and atoms of wire. But precisely how much heat is generated…
Drift Velocity Drift Current and Electron Mobility
Definition of Drift Velocity If a particle moves in a space in a random manner. That means it continually changes its directions and velocities in a random manner. The resultant…
Gauss Theorem
We know that there is always a static electric field around a positive or negative electrical charge and in that static electric field there is a flow of energy tube…
Fleming Left Hand rule and Fleming Right Hand rule
Whenever, a current carrying conductor comes under a magnetic field, there will be force acting on the conductor and on the other hand, if a conductor is forcefully brought under…
Delta – Star transformation | Star – Delta Transformation
Three branches in an electrical network can be connected in numbers of forms but most common among them is either star or delta form. In delta connection, three branches are…
Control of Electrical Drives
Electrical drives have become the most essential equipment now days in the electrical motors and other rotating machines. We know that electrical drives mainly accomplish three kinds of work, Starting…
Classification of Electrical Drives or Types of Electrical Drives
The classification of electrical drives can be done depending upon the various components of the drive system. Now according to the design, the drives can be classified into three types…
Relationship of Line and Phase Voltages & Currents in a Star Connected System
To derive the relations between line and phase currents and voltages of a star connected system, we have first to draw a balanced star connected system. Suppose due to load…
Biot Savart Law
The mathematical expression for magnetic flux density was derived by Jean Baptiste Biot and Felix Savart. Talking the deflection of a compass needle as a measure of the intensity of…
Thyristor Application Types Construction Principle of Thyristor
A thyristor is normally four layer three-terminal device. Four layers are formed by alternating n-type semiconductor and p-type semiconductor materials. Consequently there are three pn junctions formed in the device.…