Generator Action in a Motor
A generator action is developed in every motor. When a conductor cuts lines of force, an EMF is induced in that conductor. Current to start the armature turning will flow…
DC Motor Torque
Torque is defined as that force which tends to produce and maintain rotation. The function of torque in a DC motor is to provide the mechanical output or drive the…
DC Motor Theory
DC motors are widely used to drive various equipment. The speed and torque produced in a DC motor depends on a variety of factors. Inducing a Force on a Conductor…
Compound Generators
Series-wound and shunt-wound generators have a disadvantage in that changes in load current cause changes in generator output voltage. Many applications in which generators are used require a more stable…
Series-Wound DC Generators
When the field winding of a DC generator is connected in series with the armature, the generator is called a series-wound generator (Figure 10). Figure 10a :Â Series-Wound DC Generator…
Shunt-Wound DC Generators
When the field winding of a generator is connected in parallel with the generator armature, the generator is called a shunt-wound generator (Figure 8). Figure 8a : Shunt-Wound DC Generator…
DC Generator Internal Losses
There are four internal losses that contribute to lower efficiency of a DC generator. Copper losses Eddy-current losses Hysteresis losses Mechanical losses Copper Losses Copper loss is the power lost…
DC Generator Theory
DC generators are widely used to produce a DC voltage. The amount of voltage produced depends on a variety of factors. Voltage Production For DC Circuits there are three conditions…
DC Machines Construction
Direct current machines are energy transfer devices. These machines can function as either a motor or a generator. DC motors and generators have the same basic construction, differing primarily in…
DC Machines Terminology
DC Machines Terminology Terminal Voltage Terminal voltage, as applied to DC generators, is defined as the voltage that can be measured at the output of the generator. Counter-Electromotive Force (CEMF)…
