Braking of DC Motors

Braking of DC Motors: Controlled slowing or stopping of a motor and its driven load is as important as starting in many applications (e.g. cranes, traction on a slope to…

Continue Reading Braking of DC Motors

Starting of DC Motors

Starting of DC Motors: At the time of Starting of DC Motors (n = 0), the induced emf of a motor is zero such that the current drawn from rated…

Continue Reading Starting of DC Motors

Characteristics of DC Motors

Characteristics of DC Motors | Characteristics of Shunt Motor: The power of the dc motor lies in its versatility and ease with which a variety of speed-torque characteristics can be…

Continue Reading Characteristics of DC Motors

Self Excited DC Generator

Self Excited DC Generator: Rather than arranging a separate dc source for excitation purposes, practical generators are always excited from their own armature terminals, this method of excitation being known…

Continue Reading Self Excited DC Generator

Magnetization Characteristics of DC Generator

Magnetization Characteristics of DC Generator: The emf and torque equations, and power balance has been considered so far. The consideration of the Magnetization Characteristics in this section will set the…

Continue Reading Magnetization Characteristics of DC Generator

Methods of Excitation of DC Generator

Methods of Excitation of DC Generator: The performance characteristics of a dc machine are greatly influenced by the way in which the field winding is excited with direct current. There…

Continue Reading Methods of Excitation of DC Generator