Electrical Engineering Study Material

DC Motor Speed

The field of a DC motor is varied using external devices, usually field resistors. For a constant applied voltage to

A generator action is developed in every motor. When a conductor cuts lines of force, an EMF is induced in

Torque is defined as that force which tends to produce and maintain rotation. The function of torque in a DC

DC motors are widely used to drive various equipment. The speed and torque produced in a DC motor depends on

Series-wound and shunt-wound generators have a disadvantage in that changes in load current cause changes in generator output voltage. Many

When the field winding of a DC generator is connected in series with the armature, the generator is called a

When the field winding of a generator is connected in parallel with the generator armature, the generator is called a

There are four internal losses that contribute to lower efficiency of a DC generator. Copper losses Eddy-current losses Hysteresis losses

DC generators are widely used to produce a DC voltage. The amount of voltage produced depends on a variety of

Direct current machines are energy transfer devices. These machines can function as either a motor or a generator. DC motors