Electric Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Generally, motors and motor parts should be maintained and tested at least every 6 months. Then …
The interesting thing about the parallel operation of the DC series generator is that DC series generators are not usually employed for the supply of power. Instead, DC series motors …
DC generators have been fundamental in the history of electrical power generation. Yet, behind their seemingly simple operation lies a crucial phenomenon: armature reaction. This article unveils the significance of …
In a compound generator, both series and shunt excitation are combined as shown in the figure. The characteristics of DC compound generator is different for series and shunt generator characteristics. …
Insulation Resistance or IR Test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system of electrical equipment. It reflects the presence or absence of …
In this article, you will learn the characteristics of a dc shunt generator. A shunt generator is a type of dc generator in which the field winding is connected in …
In this post, you will learn the characteristics of a series wound dc generator. This article is the continuation of the dc generator characteristics. The connection diagram of a series-wound …
In a separately excited dc generator, the field coils are energized from an independent source. The disadvantage of a separately excited DC generator is the same that we require an external …
DC generator characteristics are the relations between excitation, terminal voltage and load exhibited graphically by means of curves. These characteristics of dc generators are very important in the design and operation of dc generators. This article describes the different characteristics of …
A DC generator requires MMF to establish flux in its magnetic circuit. The MMF necessary to establish flux in the magnetic circuit of a dc generator is obtained by field …
The dc generators and dc motors have the same general construction. In fact, when the machine is being assembled, the workmen usually do not know whether it is a dc …
The losses in a dc machine (generator or motor) may be divided into three classes viz Copper losses Iron or core losses and Mechanical losses. All these losses appear as heat …
Steam power stations convert the heat energy of coal combustion into electrical energy. A steam power station basically works on the Rankine cycle. Steam is produced in the boiler by utilizing …
Speed control of dc motor is achieved using different methods. There are three types of dc motors. For each of them, there are different methods of speed control. Each of …
