Speed regulations gives us information about variation in speed with changes in mechanical load connected to the motor. For shunt DC motors, SR is positive, that is, speed of motor will decrease with increase in load. If we get time, we shall also talk about DC motors with negative speed regulation. Even a shunt DC motor with high armature reaction will exhibit negative speed regulation.
Why is there no equivalent circuit of the permanent magnet?
Sir, how it is ? speed regulation increases and decrease with only increases in load...?
Speed regulations gives us information about variation in speed with changes in mechanical load connected to the motor. For shunt DC motors, SR is positive, that is, speed of motor will decrease with increase in load. If we get time, we shall also talk about DC motors with negative speed regulation. Even a shunt DC motor with high armature reaction will exhibit negative speed regulation.