Applications Of Three Phase Synchronous Motor
The important characteristics of the synchronous motor is its constant speed irrespective of the load conditions, and variable power factor operation. As…
Hunting In Synchronous Motor
It is seen that, when synchronous motor is on no load, the stator and rotor pole axes almost coincide with each other.…
Induction Motor As A Transformer
We know that, transformer is a device in which two windings are magnetically coupled and when one winding is excited by a.c.…
What Is The Smart Grid?
The Smart Grid concept combines a number of technologies, end-user solutions and addresses a number of policy and regulatory drivers. It does…
Transformer Interview Question Part 3
Q. What is the significance of vector grouping in Power Transformers? A. Every power transformer has a vector group listed by its…
Reduction Of Effects Of Armature Reaction
In order to reduce the effect of armature reaction following methods are used. 1) The armature reaction causes the distortion in main…
Load Characteristics Of D.C. Series Generator
In case of series generator, Ia = Ise = IL As load current increases, Ise increases. The flux ? is directly proportional to. So flux…
Load Characteristics Of D.C. Compound Generator
The characteristics depends on whether generator is cumulatively compound or differentially compound generator. In cumulatively compound, ?2r = ?2r + ?2r. As load current…
Concepts Of Slip Rings And Brush Assembly In Three Phase Induction Motor
Whenever there is a need of connecting the rotating member of the machine to the stationary external circuit, then slip rings and…
Electronic Configuration Of A Germanium Atom
Germanium semiconductor atom has ‘atomic number’ Z = 32. It has 32 positive charges in the nucleus and 32 electrons in various…