Shaded Pole Induction Motor
This type of motor consists of a squirrel cage rotor and stator consisting of salient poles i.e. projected poles. The poles are…
Concept Of Armature Reaction
To understand the concept of armature reaction, consider a two pole d.c.generator. For simplicity we will assume that the brushes are touching…
Winding Pitches
Now we will consider the definitions of different types of winding pitches, required in the design of the armature winding. 1.1 Back…
D.C. Compound Motor
The compound motor consists of part of the field winding connected in series and part of the field winding connected in parallel…
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…
Types Of D.C. Generator
The magnetic field required for the operation of a d.c. generator is produced by an electromagnet. This electromagnet carries a field winding…
Characteristics Of Separately Excited D.C. Generators
The characteristics is separately excited d.c. generator are divided into two types, 1) Magnetization and 2) Load characteristics. 1.1 Magnetization or Open…
Effects Of Armature Reaction
The various effects armature reaction can be summarised as 1) The armature reaction always results in reduction of generated e.m.f. due to…