Characteristics of Separately Excited DC Generators
In a separately excited dc generator, the field coils are energized from an independent source. The disadvantage of a separately … Continue Reading
Electrical Machines
DC Generator Characteristics
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 … Continue Reading
Types of DC Generator – Series, Shunt and Compound
A DC generator requires MMF to establish flux in its magnetic circuit. The MMF necessary to establish flux in the … Continue Reading
Split Phase Induction Motor – Operation and Characteristics
Before going to the operation and characteristics of split-phase induction motor we should first understand why single phase induction motor … Continue Reading
Current Transformers – Windings and Rated Insulation Levels
A current transformer is an instrument transformer in which the current ratio is within the specified limit. The primary winding … Continue Reading
Construction of DC Machine (Generator & Motor)
The dc generators and dc motors have the same general construction. In fact, when the machine is being assembled, the … Continue Reading
Transformer Oil Filtration and Hot Oil Circulation Process
Transformer Oil Filtration Plant is a self-contained unit to upgrade the quantity of oil. The duty cycle begins from pumping … Continue Reading
Transformer Oil – Tests and Purification Methods
What is Transformer Oil? Transformer oil is mineral insulating oil derived from crude petroleum. It is a mixture of various … Continue Reading
Condition Monitoring for Transformers
Condition monitoring for transformers is the process of monitoring a parameter of conditions in transformer (moisture, temperature, etc.), in order … Continue Reading
4 Major Troubles in a DC Motor with Reasons
DC motor fault zone analysis is a vital plan of any DC motor maintenance program. Several troubles may arise in a … Continue Reading