DIAC Operation

The diac is a two-terminal three-layer bi-directional trigger device. It is a thyristor device but does…

Three Phase Induction Motor Working Principle

For its operation, a three-phase induction motor is dependent on a rotating magnetic field being established…

AC Resistive Circuit | Analysis | Examples

This guide covers AC Resistive Circuit analysis along with several solved examples to compute total resistance,…

DC Motor | Types | Working | Characteristics

DC Motors and generators have the same basic construction and the typical machine can be used…

Circuit Breaker Terms and Definitions

Here, we have covered over 100 circuit breaker terms and definitions. Alternating current (AC): Current that reverses…

Electric Machine Losses and Efficiency | Examples

Electric Machine Losses Mechanical Losses Mechanical losses result when any electric machine operates. It is simply…

Single Phase & Three Phase Transformer Construction

Single-Phase Transformer Cores A transformer consists of a common magnetic circuit linking the primary and secondary…

Three-Phase Induction Motor

Like all motors, a three-phase induction motor contains a stator (the stationary part) and a rotor…

Secondary Batteries | Types | Working

The main difference between primary batteries and secondary batteries is the ease with which secondary batteries…

Three-Phase Power Measurement Methods

Different methods are utilized in order to measure three-phase power in a three-phase circuit. In this…

Advantages of Three-Phase System

A three-phase system has three generating windings, each out of phase with the other two by…

Power Triangle and Power Factor in AC Circuits

An inductor is a coil of wire having resistance and, if an iron core is used,…

Resistors in AC Circuits

The current flowing through a resistor is determined by Ohm’s Law for any instant of time:…

Sine Wave Characteristics

Here are some of the terms used to describe alternating waveforms: 1. A ‘periodic function’ is…

Magnetization Curve Explanation

Magnetization Curve Definition A curve, or loop, plotted on B-H coordinates showing how the magnetization of a…

Magnetic Reluctance (Rm)

Some materials require high magnetizing forces to align their atomic dipoles in the same direction, while…

Absolute and Relative Magnetic Permeability (µ)

The permeability of a material is defined as the ease with which a flux can be…

Magnetic Flux Density (B)

Magnetic Flux density is the measure of the number of magnetic lines of force per unit…

Magnetic Field Intensity

The m.m.f. required to magnetize a unit length of a magnetic path is termed the magnetizing…

Magnetomotive Force (MMF)

The force required to create a magnetic field is called the magnetomotive force, abbreviated to m.m.f.…