Technical articles on Electronics and Electrical Engineering topics focused on Basics of EE, Electronic components, power systems and equipment used for generation, transmission, operation, and controls of electricity.
Electrical machines are primarily classified into two groups. Electrical motors and Electrical Generators. Motors are the electrical machines that convert electrical energy to mechanical energy and generators are the machines that convert mechanical energy to electrical energy. An electric machine is made of various types of materials. There are three major constituents found in any … Read more
The term across-the-line control refers to the method of starting motors in which a motor is started by directly connecting it across the power lines. Across the line, control is generally applicable to small-sized motors. See video below:
As its name implies the basic difference between salient and non-salient rotor machines is the design of their rotor. Salient Pole Machines These machines comprise of protruding poles that have concentrated windings over them. In such machines, the rotor poles project out from the rotor core resulting in a visible pole structure. The construction is … Read more
The bode plot is an idealized graph of gain in dB versus frequency that is used to graphically illustrate the response of an amplifier or filter.
In Electrical Engineering the term insulator refers to any material that doesn’t conduct an electric current under normal conditions. While the term conductor refers to materials that easily conduct electrical current. Besides conductors and insulators, there is another class of materials whose ability to conduct electrical current between conductors and insulators. Semiconductors themselves are generally … Read more
Laplace transform of a unit step function. Also see: Laplace Transform Full Formula Sheet See the video below for a detailed explanation:
The core number is the number of conductors that are used in cable. Depending on a particular application, cables can either be single-core or multiple. In this regards different types of cables are: The figure below illustrates some types of cables based on core number:
The role of insulation in underground power cables is to prevent the flow of electricity from the cable to the surrounding environment and vice versa. The proper operation of a cable relies on the type of insulation used for cables. The insulation material used in cables should possess the following features:
Electrical Engineering MCQ on Transformer A transformer oil must be free from A transformer oil must be free from Correct answer: 2. Moisture The electric motor that is preferred for use in mines where explosive gases exist The electric motor that is preferred for use in mines where explosive gases exist Correct answer: 1. Air motor In … Read more
The term industry generally refers to anything relating to or characterized by industry. The term industrial refers to something that relates to or is characterized by activities that are related to the processing of raw materials and manufacturing of goods. The term industrial load is related to the Electrical Power Engineering industry. Industrial electrical load … Read more